This is an AU Story

I DO NOT OWN Supergirl, Flash, Arrow, DC's Legends of Tomorrow, or any other DC related characters.

Timeline

The events of Flash Season 3, Supergirl Season 2, Arrow Season 5(Assuming William's mother didn't survive Lian Yu), DC's Legends of Tomorrow Season 2 all occurred in this universe. The only real difference is that they all transpired in the same universe. Only Earth 2 (Harrison Wells, Jesse Quick,etc) is the other parallel universe they know of.

Wonder Woman, Green Lantern, Batman, and Superman will also be in this story. Let's just imagine that they inhabit the same universe. The justice League was also formed after the Dominator Invasion so that the Earth could be defended from large scale. Every hero in the Arrowverse is a member. For story reasons let's say that the heroes were to overwhelmed with their own individual villains to help Supergirl with the Daxamite Invasion.

It has been three months since Barry entered the Speed Force, and since Mon-El was forced to leave the planet Earth, but one individual would soon be back in a Flash.

Barry Allen was always on the run, whether it be from escaping his childhood bullies, or running head first into danger to save others. Inside the Speed Force, Barry was forced to relive his life hundreds of times. He would live through hundreds of possibilities. Barry still remembered his life before he entered this hell of a place, he believed he deeply loved Iris, but in the back of his mind he had doubts. Iris had been his childhood crush since he could remember, but growing up in the same household in all his lives had forced him to see her as more as a sister. His early lives would consist of him and Iris living happy lives, but as time went on he would abandon this and fall in love with Kara. He realized that he had always had a crush on the super-heroine. With his new love of Kara, his mindset was to go back to his earth and give this a chance. So, he ran faster and faster, and would soon find himself passing through a breach.

Barry had made his way to Central city. He took in the sunny landscape, and buildings before sighing and saying "I'm back, I can't believe it I'm actually home". Afterwards he made his way through the city to find a newspaper stand, once he did find it he picked up the newspaper.

"Wow, it looks like I've been gone for three months, today is August the 27th. I wonder what I missed" With that in mind he made his way to STAAR labs to see what's changed. He was surprised to find it reconstructed both on the outside and the inside. The new tech support area sported a new top of the line computer monitor and his old suit on a stand with a plaque that said:

The Flash

Hero amongst Heroes

Never Forgotten

"Wow Cisco, you've really outdone yourself" As soon as he finishes taking in the view Cisco rushed in to see who was in STAAR this early and on a Sunday. "B-B-Barry?"

Barry turned and gave him a wide grin, "Hey Cisco, I was hoping to find the rest of the Team here, but oh well. It's nice to see you man" A tearing Cisco made his way to his previously lost friend and hugged him.

"Barry is it really you, I'm not having a dream again am I" with that remark Cisco left Barry's arms and pinched himself in the arm. "Huh, would you look at that it's not a dream" He once again made his way to his friend and bear hugged him. "Cisco if you keep doing this I'll have more than one broken rib" Barry joked.

"Oh, shut up we both know you can heal in a matter of hours, let me just enjoy my best friends company, OK?" Cisco said

"Ok fine you make a valid point" Barry replied also enjoying the hug.

After what seemed like hours to Barry but was actually 10 seconds Cisco let go of Barry.

"So, Barry how did you get out of the Speed Force?" Cisco asked

"We'll you see Cisco in the speed force I lived through hundreds of lives and learned that I can control the speed force because I generate it, so I simply ran with my destination in mind and I got here" Barry answered. "Huh, that sounds like a ridiculous explanation a writer would use in a comic book, but I guess I can see your reasoning" Cisco replied.

"Well glad you understand, so how's everyone?" Barry asked

"Caitlyn is still MIA, Iris and Wally have been working together like you said they did in Flashpoint with the help of Julian and myself of course, and Tracy went back to the university to continue her work." Cisco answered

"Wow, what about Oliver, the Legends, and Kara?" Barry's heart skipped a beat when he mentioned Kara's name.

"Oliver had one last epic confrontation with Prometheus in Lian Yu, and get this Prometheus rigged the whole island to blow up if he was killed. Oliver didn't kill him, but from what I understand Prometheus shot himself as a final attempt to show Oliver what a monster he was. It sadly worked to an extent and now William is living with his Oliver since his mother died."

"Wow, I feel that I should pay Oliver a visit and have a talk with William he might want someone who can relate to losing his mother" Barry said. "So, what about the Legends?"

"No one's received contact from them and since we don't see an Eobard or Damien Darhk running around we can assume they beat the Legion of Supervillains"

"Ok so what about Kara?"

"Soon after you left the Daxamites invaded National city, but were defeated by Supergirl which came at the high price of making the atmosphere lethal to all Daxamites including Mon-El, he was forced to leave Earth"

This all came as a shock to Barry since he had grown to like and respect his Daxamite friend. He now more than ever wanted to comfort his grieving friend.

"We'll that about rounds it up, any more questions Barry?"

"Ask my young Padawan and you shall receive" Cisco said in a Yoda voice.

"I'll be back I need to see Kara, don't tell the others I'm back I want it to be a surprise."

"Ok" Cisco answered. With that Barry was gone in a flash in his old suit leaving behind his new suit, which Cisco found very awesome and sad he didn't think of that design sooner, leaving Cisco to go over any metahuman activity in Central. Cisco quietly mumbled to himself "I wonder if Alex and Maggie are at Kara's" He chuckled "Well I hope not it'll be very awkward to see the three interact since he doesn't know of their engagement"

Barry made his way to the Kara's apartment, he knew all too well from all the game nights he went there. Not wanting to intrude he stood at the door and knocked hoping someone was home. After a second a brunet with short hair, and tanned woman opened the door.

"Hi Flash what are you doing here? "she said. "Hi, I was hoping to talk to my favorite reporter Kara Danvers is she home"

At that moment, a dark-haired blonde came to the door "Oh hey Barry weren't you supposed to be trapped in the Speed Force?"

"What's the Speed Force?" the brunette asked. "It's the power source of speedsters, as a matter of fact it's the source of power for our friend Flash here aka Barry Allen"

"Way to go Alex just say a bit louder I don't think the world heard you and I just got out an hour ago" Barry said

"Shut up Allen and say hello to my fiancé Maggie" Alex replied

Barry greeted the woman once again and thought "Of course this is something Cisco forgets to mention, I'm so hiding his tools when I get back home"

"So, where's Kara?" He says with a huge smile on his face

"She's taking a shower, she'll be out in a bit, you're welcome to sit and wait for her she'll be happy to see you." Alex replied

"Ok I'll wait" After a couple minutes Kara came out in a simple sweater and pajama pants. As soon as she saw him she rushed the speedster into a hug with tears in her eyes and a large smile.

"Barry it's so good to see you, I missed you so much"

"I missed you too, I was hoping to come to lift your spirits, so what do you say pizza and donuts?"

"That's sounds nice" She let go of him

"Ok I'll be back in a flash" he left with a grin in his face. Kara couldn't help but chuckle at the bad catchphrase.

"Wow Kara you haven't smiled like this since before Mon-El left" Alex said

"Alex, Barry just has a way of making me smile because of his optimistic attitude, and the mention of food also helped" Kara said with a smile still planted in her face

"Well guess we better keep him around I hate to see you sad, we'll its getting late Maggie and I should head out we'll leave you to it"

"Oh, come on stay it's only 6, I promise Barry and I won't eat all the food"

"Nah, something tells me he wants to spend the day with you only"

"What makes you say that?"

"Oh no reason, anyway I love you bye" Alex and Maggie quickly left closing the door behind them.

Kara thought about what Alex said could Barry really want to be alone with her? No, he couldn't want to, this couldn't possibly be a date. He's with Iris, and I'm still mourning Mon-El he wouldn't do something like a date to jeopardize our friendship. He's too nice to do something like that.

Before she could think further Barry made it back with 10 pizza boxes from Coast city. "I'm back, hey where's Maggie and Alex I was hoping to catch up with them?"

"They said they had a dinner reservation they had to get to" Kara lied

"Oh ok, so what do you say 5 for you and 5 for me?"

"That sounds great, how about a little friendly race to see who is the fastest"

"You're on girl of steel, just don't forget I'm the fastest man alive, get ready for second place "He playfully said

"It is your scarlet speedster who is going to lose" she said with a grin on her face

After the competition and Kara's victory they exchanged stories about what happened to them. Barry leaving out the parts about his and Kara's many lives together. They sat at the couch and watched The Office on Netflix. Kara would slowly drift off to sleep in Barry's shoulder. As he layed her on the bed with the blanket covering her, he kissed her forehead "I love you Kara Zor-El and I hope in due time you love me too" With that said he made his way back to Central City to STAAR Labs and slept on a cot he found lying around.

The following morning, he woke up and headed into the cortex and found his two siblings.

"Iris I'm telling you I didn't touch Barry's suit it was there last time"

"Well Wally who else could it have been, you always said you wanted to carry on Barry's mantle" Iris said with an angry tone

"I do, but I'm still not worthy of the Flash title"

"Oh, he didn't take it, I did" The Two West siblings turned to see the origin of the third voice only to see a smiling Barry Allen.

"By the way Wally I think you are worthy of the Flash mantle"

A tearing Iris made his way towards Barry to kiss him, only to be surprised by the simple hug Barry gave her.

"That's weird I would think Barry would want to kiss me after all he's been through" she thought. After hugging Iris, Barry hugged Wally and he caught them up to speed on what happened to him.

"That must have really sucked Barry"

"It did Wally, but at least now I'm home, I'm glad to see Central City is still intact, nice job"

"Oh, thanks it was nothing"

"Iris may I speak with you in private."

"Sure Barry, Jitters?"

"Sure" Hopefully now we can talk about the wedding date Iris thought.

After getting their coffee the two began their long-awaited talk.

"So, Barry when are we getting married. I know it's a bit too soon, but I love you and don't want another thing to get between us" she said while holding his hand

"Iris I love you too, but…."

Letting go of his hands "but what Barry?" she asked clearly mad

"I don't love you like that anymore"

"I don't love you like that anymore" those were the words that came out of Barry Allen. She couldn't believe it she waited for him for three months and as soon as he comes back he doesn't love her. She was beyond furious.

"What do you mean you don't love me like that anymore" if looks could kill Barry would be dead right where he stood

"Iris I hate to have to tell you this, but I only love you like a sister. Let's be honest it's disturbing that two step siblings marry each other. I will always be there for you as a brother, but no more"

"I hate you Barry Allen I can't believe I ever loved you, I never want to see you again!" She stormed out of Jitters with no destination in mind, all she knew is she wanted to get as far away as possible from Barry.

Barry was devastated at Iris' reaction went for a run wanting to think alone. "Maybe I shouldn't have told her" he thought. "No, Iris will eventually understand, she never thought of me as a boyfriend all the years we spent growing up, she has to feel the same way deep down, Right?"