I think you should appreciate what you have.You have a gf already and she cares about you.Cherish that man.Pet bro sis no meaning wan leh.Friends is friends.Dun get too involved in their matters.If they need help wait till they ask you and see what you can do.If they dun ask then dun bother.Be aware not all people will repay what you've done for them.

(I hope I am not trying to act smart or anything.Plz dun flame me,i rarely visit cupid's corner thread)