Dating

Alright ladies, I need some advice. So i’ve liked this guy for about 9 months now, and we’ve started talking and been regularly hanging out for about a month now. He is always super sweet and treats like a princess honestly, but I found out 3 days ago he has a gf.... Supposedly the girl lives 12 hrs away and “doesn’t respect him” but i’m really confused on what i need to do. I for real don’t want to be the one helping him cheat; but things have been going so well. Help!!! ❤️