Question ???

I have a boyfriend and every time he comes over my house , my mom will not let us go to my room . We have to stay in the family room where there is just no privacy . I just don't understand why he can't come into my room .. I agreed to keep the door open and everything..  She just has a huge problem with it. Does anyone have in suggestions on how to convince her to let me and my boyfriend hangout in my room ??