I moved back to my old neighborhod. I remembered very much my friends.. and my gf y/n.

I went on a walk til a girl passed by, I remembered her.. It was Y/n!! "Nico?.. what are you doing here? How are you? She asked I told her that I moved back here and I noticed a little boy next to her and kneeled down to his height and tickled his stomach. "Who's he?" I ask and looked up "Uhm.. Just family.." she answered I look at him again and realized something.. Why is he so similar to me?..