i don't feel like reading everyone else's posts so im just gunna say:
Whatever you do, do not get out a 22 (the gun) and threaten him like this guy did to my brother because I went and beat some ass, as will this guys friends. that is if he has any. don't use weapons
tell him straight up that he will be the one in jail not you. then tell him that you will be fucking his girl while he sits there with a guy named bubba, that "feels'' things at night.
or you can use the blackmail card and threaten to use the police if you are for sure that he sells meds.
or, don't be a pussy, start working out and get stronger, beat his ass the fair way. < that way, you will get the girl too. maybe.
edit: on second thought, i hope he beats your ass. don't fuck with other people's girls. bitch.
im gunna kick your ass tomorrow.
no im just fucking with you, enjoy.