Neville's wedding held the record to be the most fun wedding Seamus attended up 'til now.
It started with Neville actually asking him and George feckin' Weasley to plan fireworks fitting a marriage between a Hufflepuff and a Gryffindor (Dean also gave some imput and George seemed almost happy) and ended with him sitting between Parvati and Dean and talking about happy times at Hogwarts.
Seamus was able to properly fake compassion when he heard that Dean had broken up with his wife, Jolene, and attended his with his week-old son Colin (Denis Creevey cried when he heard that name), who looked like Dean made a feckin' clone of himself and then bathed him in the eternal spring of ultimate cuteness.
Wee little Colin took it upon himself to break it to his mother that he was a wizard baby by turning his teddy bear into a unicorn. She had a mental breakdown and refused to even look at her child or husband again. Dean moved into his workshop and had, judging by the way he looked, estimated not more than three hours of sleep per night. He still was in a surprisingly good mood though.

The only negative thing Seamus could think of the next morning was the major fight Ron and Hermione had at three in morning under the eyes of all remaining guests. He still wasn't completely sure what the fight was about, since he only started to notice their dispute when Ron screamed "Yeah! Kids need a mother! They don't need a woman that meets them for two hours every four weeks for a cup of tea and a discussion about their academic future! To be a parent you've gotta actually act like you care for you children! " of the top of his lungs. "Even Seamus acts more like a mum than you!"
That was mean. Seamus stared at the ceiling and pulled the blanket a bit higher. He'd never even tried to be a mother. There are some obvious anatomical parts he lacked and he was quite happy about it, since he was quite comfortable in his current body. (Tough he would mind to be a bit taller and less freckled.) There'd been more fighting, and at some time Hermione had lost it and tried to hex Ron, which ended with Harry, who'd tried to keep his friends apart, getting hit by a Slugulus Eructo, which is one of the most disgusting things Seamus had seen in a long time.
That was, however, reason enough for Ron lose focus on the fight and concentrate on taking care of Harry instead, by accio-ing a bucket so he wouldn't vomit more slugs on the floor and rubbing his back soothingly. Seamus heard him mumble quiet apologies and almost missed seeing Hermione grab her sleeping daughter's hand and apparating away. Things got a little bit chaotic after that.

When Seamus enters the kitchen, Ron is about to make breakfast and there's just one child at the table. It's weirdly quiet without Rose around, but Ron had been friends for too long with Hermione to get authorities involved to search her and the girl.
"Hey Shay! I think I did something stupid again." Ron said with a wry smile, pushing a cup of tea in Seamus' hand. Seamus nodded and ruffling Hugo's candyfloss-soft hair and sat down.
"Perhaps I should get Harry to help me talk to her though. I don't want to fight with 'Mione...she loves the sprogs, she's just...she doesn't think like normal people. She's just so focused on work and brain stuff that she doesn't notice things that happen around her...I mean she slept in a bloody tent with Harry for almost a year without noticing that he speaks Parsel in his sleep. She didn't noticed for months that Hugo started showing magic. She didn't notice her own daughter was left-handed until I told her." a sad laugh.
It's something Seamus just started to grasp. Ron feels often overlooked. He has no self-esteem and the war or him being an Auror and co-owning one of biggest companies in the British Wizard economy can change such a integral part of his personality. Ron hated himself for it and he tried hard to make sure that his children feel like they're special, like they matter...Hermione didn't make it easier with forgetting she even had children and an ex-husband most of the time.
"She didn't notice for years that her husband does prefer wands over cauldrons." snorted Seamus, trying to not think of little Rose waking up without her Dad around to make her breakfast and braid her hair. "Yeh should talk to her." A short nod. Ron's hair fell into his eyes. He looked like had not slept the night before
"Perhaps I should just go. She thinks I'm a bad father, yanno. Said I'm a bloody low-life drunkard tha' doesn't deserve such beautiful children. She said I'm wasting my life, tha' I'm lazy and no' a good role model for them."
there was a short pause. Ron set down his mug of cold tea with a hollow "thud" and stroked the honey-brown hair out of his son's eyes. "Yanno...she's probably right. Blokes like us, bloody liars and drunkards...they don't deserve to be with children! We're sick! Dangerous! The sprogs are probably already fuckin' traumatised! They need their mother an' I'm keepin' 'em away from 'er." his grin is brave and watery.
"yeh're drunk. Yeh feckin' drama queen!" mutters Seamus. "Don't even dare to..."
"We're playing some kind of happy family make-believe game an' it won't work! We just keep lying to ourself tha' we coul' live the happily ever after, and it'll never work. Blokes like us don' ge' a bloody happy endin'! 'm jus' hurting my children an' I'm using my family to feel useful... I'm no' needed here, Shay. Harry 'n Ginny have each other, my children are better off with 'mione...no' even George needs me here!" Ron looks like a madman with his craggy hair and deep dark circles under his eyes.
"'m no' planning to go forever...just for a while... to clear my head and find somethin...something I can do to to be needed...something differen' than the bloody side kick...a footnote..." he interrupts himself, gently petting Hugo's head. The toddler started to cry.
"I need your help, Seamus."

Twenty minutes later, when an explosion hit the upper floors of Diagon Alley, Seamus and Hugo sat in the park feeding ducks, while Seamus tried to breath again.
It was Harry that found him. His face pale and skull-like and his whole body spasming in worry and fear as he was gripping Seamus by the shoulders and shaking him. "Shay! The explosion...tha' was you! Tell me wha' happened! Tell me!" He begged, he tried to bargain, he even cried a bit, but Seamus didn't know how to answer. It was like he lost all his words. He hadn't felt this numb since the morning after the battle.
"He's gone, Harry." he finally croaked and it took him all his willpower to get these words out. Hugo sobbed in his arms again, when Harry side-alongs to the Burrow, defying all regulations that stated that interrogation had to be in the official rooms of the Auror Department.

As soon as they arrived there was a second child in Seamus' arms. Rose is screaming at the top of her lungs. Pure panic in her eyes. Seamus helplessly rocked the crying children in his arms and wobbly walked inside the house to sit down on the kitchen bench.
Hermione was there. He was pale and quiet and scared and if Seamus had been angry at her some time for the way she treated her children and Ron, he still couldn't resent her now. He tried to smile and even sid "thank you" when Mrs. Weasley put down a cup of tea in front of him.
He wasn't scared for Ron. Ron's an idiot, but he's not suicidal and he was a powerful Auror. There were only few people in a post-war Wizard Society that could be dangerous for him...plus they're friends, mates, they may see each other as family but they're not a couple they're mates. He knew it was something Ron has to do. That's why he helped him to cover up his traces with the explosion to make it untraceable for his colleagues.
Ron's words are still ringing in his ears. It were words that he tried not to say to himself everyday and that were so ingrained in him it hurts. Just by being the way he was , just by being born...he he was not meant be loved by his family, friends, by God.
He was feckin' freak of nature. He's sick. And no matter what he did, it wasn't something he could change... You could decide to not kill (what he did). You could decide to not lie (which he did a lot), but no matter how hard he tried he could not decide to be not interested in men. Even if they gave him four wives and he had a dozen biological children with them, it wouldn't make him any less gay. He supposed that that was what Ron had tried with his marriage. He tried to do what was normal in Wizard society. Marry a girl, that would never make you happy, pretend you're someone else and make your spouse believed you actually like them. Be unhappy together, because you don't deserve to be happy.

Seamus couldn't be angry for himself, but he was furious for his friend. Ron's a good bloke. He's an idiot, he drinks too much and he's liar, but he's still a good bloke, that cares for his family and tries hard to do the right thing. Ron doesn't deserve to think that he's inferior to anyone or to live with the knowledge that he doesn't deserve happiness, just because of something he can't even change.
"What's wrong wi' yeh, 'Moine!? Suddenly yeh're worried?! Yeh don't care 'bout 'im as long as he does his job as a nanny?! Ron's ya feckin' best friend! Yeh think tha' changes jus' cause yeh're no' married any more?" he hisses and pulls the children a bit closer.
In his heart they're more his children than Hermione's. He doesn't dare to say that though. Rose had stopped crying and tries to calm down her little brother, who's still sobbing in Seamus' shirt.
"He cares a lo' 'bout wha' yeh think." Seamus mumbles a bit quieter and awkwardly rubbing the Hugo's back to calm him down. "An' he's a feckin' mimosa...thinks of 'imself as a complete failure...a footnote...Wha' do yeh think how he'd react when you tell 'im tha' he's no' fit to raise his children?"

Seamus sweared he could hear Mrs. Weasley mumbling something about the "silly boy" and "thought he'd grown out of that" and Hermione looked close to tears. "I didn't mean it. I just...I wanted...I was so lonely. I'm not good at that mothering thing...or being a good wife, but I love my family...I just..." she stammered and Seamus watched Harry putting a hand on her shoulder.
"It's okay Hermione. Ron'd never leave the kids alone for too long..." it sounds more like Harry's trying to calm himself down. Seamus knew Harry since they were tiny firsties and he'd seen him in all kind of trouble and distress, since Harry seemed to have some kind of natural magnetism when it comes to trouble. He'd never seen him like this though.
"Ron always comes back."
One part of Seamus wants to set his bum on fire for that comment, but he looked so broken and hopeful at the same time that he felt a bit sorry for him too. Seamus never got why Ron had fallen in love with Harry. Yes, of course, Harry's a war hero, the "Chosen One" and a great friend, when he's not busy saving the world, but he's neither especially good-looking nor especially good with people. He's a midget, almost as small as Seamus, he's scrawny and he never was good with words or just paying attention to his surroundings. While Seamus liked Harry as a friend, he never got why Ron was so charmed by him, that he'd never leave him out of sight from their first day and Hogwarts.
Now, though, Seamus starts to understand.
Harry's trust in Ron's loyalty and friendship, his ungrounded jealousy about the friendship with Seamus and everyone else that tried to befriend Ron, is like the missing puzzle piece to Ron's insecurity and his fear of being invisible.

"I told Ron that I was thinking of my political career...that I think I can help a lot of people and he said he was proud of me. I was so happy..." whimpered Hermione. "I...got a bit carried away and asked him if I could have a photo shoot with the children for my campaign... you know they're making them of all candidates to make them seem closer to the common people...I said I was proud of my family and I'd like to show them off..." she looked down in her mug. Seamus notices from the corners of his eyes that two of Ron's armada of big brothers (he'd already forgotten half of their names...except for the twins) had entered the kitchen.
"Which is incredibly daft for a witch as smart as you." Seamus can't help but snort. "Yeh told Ron, who's a feckin' devoted father, that yeh wanna use our babies for ya feckin' political propaganda and yeh're expectin' 'im to no' explode in ya face?"
He looked down on the children in question. Hugo has fallen asleep and Rose was also starting to doze off. Seamus had the suspicion that she didn't sleep much the last night.

"You said 'our'..." mumbles one of the Weasley brothers, long hair, tall and around forty. This is not the look of confusion. This is the look of "What did you do to my little brother and does qualify as a reason for me to hex your bollocks off". Seamus has only seen him on a handful of occasions, but he already knows that the guy can be feckin' scary.
"Well..." grumbled Harry sitting down beside Hermione and emptying her mug absent-mindedly. "Two adults living in a tiny apartment, raising children together...if one of them were a woman you'd not even ask and just assume." He's jealous. Harry's married since years, just impregnated Ron's sister for the third time and he feckin' jealous of Seamus and Ron's pitiful "blokes with benefits" solution.
He knew about them and didn't even consider talking with Ron about it or supporting him...he just kept Ron being all love-struck in by his side and...
"Sometimes, Harry Potter, yeh're a feckin' knob." Seamus said gravely staring at him. "Yeh ever thought tha' ya best mate could've used a bit of a support? Or were yeh, in secret, laughing 'bout 'im for bein' a bloody freak? For tryin' to lead a good life an' do the right thing despite thinkin' that he
doesn' deserve to be feckin' happy?!" this is not just about Ron any more. This is about the world and their life being unfair and wizard society assuming that it was always better to marry a woman that you don't want like instead of a person you like.
This is about him feeling alone, about children being born despite their parents not being able to give them a loving, whole family. It's about lyingto your husband or wife and make them believe you married them out of love and not because they were the most convenient option that didn't force you to leave your family.
"Shay!" Rose' high pitched voice puts a stop to Seamus flood of words and made him look down in her displeased tiny face.
"You must not shout! Hugo's sleeping."
It's then that it started dawning him, that he just outed Ron in front of his family and Hermione, the people he desperately not wanted to know.