Whenever I am here

Whenever I am here,means.. I met problems again..
I like a guy. Really,the feeling is really strong enough. Just like the feeling I met him last year. Exactly. But I know.. He is like a play boy. I want to be with him. I like the feeling so much. But,there are things to worry about still.
I know..maybe I will fail and hurt until I left nothing even worse than the ex.
But there are the strong feeling to ask me to try,try,try!!! Keep on trying for give up!
I really hard to make a decision. God can you please do me a favor? Follow my feeling? Or be realistic. I know,realistic is always that cruel. But being lied from something doesn't feel good either.
What to do?!