Lyric discussion by tugit 

Cover art for A Chance lyrics by Kenny Chesney

What does he mean with: "It feels so good to me to have you this bad"? I'd understand "it feels so good to me to have you in (this) bed" or even "it feels so good to me to hate you this bad" - though that last one is very strange too in the context. It might be that he means that he can have the girl in a bad way - meaning in a way without any love.

And what is "it", which he does to keep his hands of her?

"it feels so good to me to have you this bad" simple put just means that it feels good to like you or want you this bad. (have you in my head) this song tells that she didn't give the guy a chance (for whatever reason) to be with her. to not have gotten a chance probably means that he tried. and "it" is refereing to him keeping his hands off of her. (not showing emotion) just playing it cool ya know