- Wait it out, see if they break up and then pounce (say in comments how long I should wait)
- Drop him and get over him no matter how painful
Most Helpful Guy
Okay let's assume he leaves her girlfriend in your favor. What will happen next? He gets "into" someone else and then drop you too just to be with next one? And then again and again? The best thing to do here is to be rational and cut him off. What "pain" are you talking about, imagine pain of his girlfriend if he dumps her. You two aren't even in a relationship, there is no REAL pain there.
Most Helpful Girl
If he leaves her for you don't expect your relationship to last too long. Sooner or later he will find another girl who he will like more than you, just how he likes u but has a girlfriend Now, and he will dump u for the new girl.
So u better move on