Men troubles, help? Please read all, long story =/?

So I met this guy an we've gotten really close in the past few months an have gone up to meet each other an spend some time together (we live miles away) an he openly admitted he is falling for me an I admitted that I like him bur he has a girlfriend who lives in france. Every day we talk online and evetyday most of our conversations have been about me telling how to fix his relationship, But now he admitted he is thinking of leaving his current girlfriend because he wants to be with me but he keeps going back to talking about wanting to fix things with his current gf (who is a manipulative, self centred cow an im not just saying that because I just so happen to like her bf, his conversations are usually about him not knowing how to cope with her expecting the world from him)

He seems to be so tied down by her manipulations that idk if he reallly is serious about leaving her as much as he has said I make him happy an he doesnt understand why things can't be like this with his gf so idk what to do. it feels like the only way im gunna know where I stand is if I give him some sort of insentive but he seems to be pretty damaged from this current relationship (he has no self esteem an has contemplated suicide before, if he was free of her I know he'd be a different person because hes such a happy, easy going person when we hang out)

So what do I do? Do I give him some sort of insentive or would that ruin any chance I might have because he literally ticks all my boxes.