Hello, all! This is just something that I thought of after watching a BuzzFeed video called "The 7 Types of Girls You Date". If you have not seen it, I suggest that you do because it is sickeningly sweet and could give you some idea on where I'm coming from.

So, not only do I own the concept as it belongs to BuzzFeed, I also don't own any of these characters, as they all belong to J.K. Rowling and the Harry Potter series.

I hope you all enjoy my first story!

"How did you know, dad?"

Ripping me from my thoughts, my son's voice called out to me as he lowered himself to the bench that I had been occupying for no less than an hour. I hadn't even realized he was here and outside until his voice startled me from staring at my wife who was working with our two younger children on tending to the garden. As I turned my attention to my eldest child, the shrieks of laughter and voices of the rest of our family faded and I suddenly became aware of how much my son had changed over the years.

He was no longer my six year old who clung to my leg and came bounding to the fireplace when I arrived home from work. In fact, he had just been promoted in his first job not too long ago, and had even moved into his own flat in the past year and a half, much to my dismay. It didn't seem possible to me that my son was old enough to be supporting himself, but I knew that it was time to let him grow up and fly away from the nest, as my wife often told me. At almost twenty years old he was quite the ambitious young man, and although I didn't want to admit it, I had to let him grow up.

"I'm sorry, Scorpius, what did you say?" I asked him bashfully, knowing I had been caught in a trance that never failed. My wife and children were my life, and nobody could ever question my love for any member of our five part family. Pulling a hand through my pale blond hair, I let out a soft sigh. Had it really been twenty five years since I had been nineteen like Scorpius was now? Although my wife teased me about my age endlessly, I refused to believe that I was getting old, instead reminding myself that I still had enough energy to keep up with our twelve and ten year olds.

"How did you know that she was the one for you?" He restated his question to me, and all of a sudden it made perfect sense. With raised eyebrows and a small smirk, I pondered on the implications of his question. My son was much like I had been when I was his age; not having a long attention span when it came to relationships. There had been a change though. Although I couldn't be for sure as I no longer lived with him, I could tell that he was happier, and he continuously wore the smug, happy look that he had inherited from me. I had a growing suspicion that there was a girl that was changing everything from him.

As my grey eyes met their match in my son's, I realized that I actually needed to answer his question. It wasn't often that Scorpius came to me for these kinds of things, and I wanted to assure him that I would always be there for him. "She's my Sunday." I said softly, my line of vision finding my beloved wife as her head tipped backwards in laughter at something our ten year old daughter must have said. My perfect daughter, the one that looked so much like her mother while her two brothers were mostly my copies with a few details of their mother mixed in.

Turning back to my son, I had to force myself to cough to hide the laughter that built in my chest at seeing the tell-tale signs of confusion growing on his face. Since he was a child he had made the same expressions, a wrinkled nose atop pursed lips and far away looking eyes as he tried to mull over what I said before meeting me with a pleading look to explain myself. He needed to understand, and as his father, I had to make sure I shared my knowledge with him. As I messed with his hair and he batted my hand away with a smirk, I thanked my lucky stars that Scorpius and I had developed a stronger relationship than I had ever attempted with my own father.

"She's my Sunday, Score." I let out a sigh, knowing how sappy my son was about to hear me sound. Hopefully he had enough sense to know I had every baby photo and embarrassing story about him at my disposal if he let someone know how much of a romantic I could be. "You know how days of the week all have some kind of special thing about them that makes us feel a certain way? Relationships are kind of like that, too, I think."

Realization dawned on his face as he processed my words and eventually I observed him as he leaned forward, propping himself up on his arms that were making right angles as they rested on his legs. "Like, how Monday is always overwhelming and Friday is always fun?" He asked me, to which I nodded and offered him a small smile. "For the most part, yeah, that's right."

As the sun warmed my skin and I didn't feel the pressure of work or the stress of sending my baby girl to Hogwarts in a few months, I was again reminded of why I loved Sundays. "Sundays are special," I started again, hoping he didn't find my explanations too vague for his liking. "I knew that she was the one because I've experienced all of the other days, too. There's something different about her, about Sundays if you will."

With one raised eyebrow staring at me, I let out a chuckle and settled back against my trusty bench, settling in for quite the story as I folded my hands in my lap. This wouldn't be the first story that I told him on this very bench, and I hoped with everything I had that it wouldn't be the last. Sundays indeed were my favorite days. It was a day for love, a day for family, and mostly a day of happiness. "I'll start at the beginning then, and maybe by the time I finish you won't think that your dad has gone batty."

My son's smiling and eager face sent nostalgic feelings straight to my heart. Every once in awhile, when he was excited, he would get the same expression on his face that he had when he used to greet me from work every day before I would hoist him into the air and onto my hip where he could tell me all about his day. No, my son was no longer a child, and I was no longer the center of his world, but if I was going to be included on him finding the new center of his world, well, I had no complaints.