I’m in love with someone taken

I’ve been friends with this guy for about 2 months now and we always are hanging out and we both act all flirty to each other and we’re are always hugging i think we actually hugged once for 1 hour straight😂 But the problem is he has a girlfriend and I can’t stop thinking about him and I want to be with him so bad he makes me so happy so i don’t know what to do! I’m scared that him and his girlfriend will never break up and he didn’t ever feel anything for me like I do for him. What should I do? (Please don’t give me the advice to forget about him cause it’s been long enough for that to be off the table)