Life concerns

ok... i have this boyfriend that i have been with for four years now and for the first 3 and 1/2 he has had this girl from school obsessed with him, and i mean obsessed and at one point she got to live in his house with my boyfriend, me, his sister, his dad and his sisters fiance well i found out not to long ago that he some how some way for positive made sure that this girl was not allowed to date any guys by no means while she was living here and my question is... does he have feelings for this girl or does he just like the control and she as able to give it to him and should i still stick around?

Leave him, unless you want to live in a harem. If he is interested in you he will fight to get you back. Then you can demand that he leave that girl, as condition for coming back to him.