Help. Im not going to go any further with it, so dont bark at me, I do need support

Little me

Hi people there, Ive been lurking here for about a week. Yeah.. soryy...
Im just wondering, what do you leave for someone like me? I felt for someone who told others he was married but not me and its just feels like magic and "telepathy" and we both seem very happy when we are in the same room, like there is no one else, so I asked around and he is married, just had a baby, so I decided to kill the feeling before I act upon it and Im very much in deep pain, Ive done nothing to pursue it. Im just sad I wish him good cuz I feel al this tender feelings for him, and all his body language indicates he feels attracted to me, but I also feel uncomfortable that he might be a cheating bastard cuz he offered me a car ride the week I met him. I remember him saying a pick up line at a wedding! to me four years ago but I was too shy then and had just lost alot of weight so I didnt buy it when people found me cute. Maybe he wasnt married then? Ill never know. I love him, will never act upon it. But he started to be so goddamn happy around me, his eyes sparkling, and me too. And then I did a little research and I hate it. Its over. It sucks. Help me. He has family -a brother I think- living in my same building. I might have just bumped into his parents in the elevator. Why me? How can I kill the feeling?