probably the wrong section but i didn't know where to post this. but here's the story...

i know this guy that is sketch as hell and he gets himself into ****ed up situations and always expect me to get him out, and i never do cause i don't want to have anything to do with him. i've told him before that i didn't want him bugging me at work and what not but he still comes around.

well my girl got mad at me today cause he shows up while i'm busy doing my job and follows me around and ****. she thinks i was hangin out with him, when i wasn't, and got mad. i tried to explain to her what was going on and she thinks that i'm bs everything.

what should i about the situation with her? and how do i get the crackhead to leave me alone?