Search Results: my crush lied to me

So I grew up with this guy and he teased me though out our childhood-he was something like a bully to me. So last yr I stuck up for myself and confronted him and he bounced back tremendously. I dont know why/how but I went from not seeing him as attractive to wow he's attractive and for the past couple of months I've developed a crush on him and have been playing it cool. He wasn't interested in me (like friendship or relationship wise), I added him on social media and he lied to my face and says he added me back (lies), he didn't say hi to me in public... That behaivor was all up until two months ago when he made a move (touched my hand and didn't move his fingers away from mine). I kept my hand next to his but removed it after a bit because he has a girlfriend and a female best friend. So of course I closed that chapter of my life with him (tried not to sit by him at choir practice nor stare at him and other things) but I quickly realized I couldnt fight it anymore. So three weeks ago I locked eyes with him and he beated around the bush b4 he locked eyes with me too. Ever since then I've caught him staring and locking eyes with me and flirting as well as making advances twoards me. Should I go for it and develop something with him? As in develop the feelings I have for him. If I make him fall for me he could end it with his girlfriend for me.