Background info: I'm in my last year of college. I've been living with my boyfriend of two years for the summer. We have a serious, wonderful relationship and want to get married in the future. For financial reasons (long story), I'm going to be moving back on-campus to be an RA (and get free housing) for the school year.Ok, so real problem. My mother comes up to Boston for the weekend to help me move from my boyfriend's place into my on-campus apartment. We're all at dinner, having a nice time...and suddenly she starts rattling on about "the sleeping arrangements this summer..." and how we've been "living in sin". I stop her right away, completely mortified (not only that she would say such a thing, but especially in front of my BF) and ask her to please stop because it's offensive and I ask her to apologize. (I knew she wasn't happy about us living together, but she doesn't really have much to say since I'm financially independent from her. Also, she's NEVER used the phrase "living in sin" before.) So she essentially tells me to get over it and then says it again and continues!I'm ready to kill her and I have to move all of my stuff with her today. I can't understand why she knows she's offending me and CONTINUES! If that's what you think, keep it to yourself. Don't come up here, after months of not seeing me, and make a stressful (and sad) time worse for me.Thoughts? Or am I out of line?