I feel weird asking this to strangers, but I really do need an opinion on what to do about my boyfriend's sister. She's never really been that warm with me, though at times we've had some decent conversations and I went to celebrate New Years (with my boyfriend and his parents and her husband) across the country where she currently lives. We've never hung out 1:1, and any time she's been in town and invited me places, its always in a group with my boyfriend and we never really interact. She and her husband came into town for Christmas last year, and we ended up having an "incident". I was at a family get-together without my boyfriend and had been... shall we say, "overserved"?... and she threw me out of her parent's house for my being loud and obnoxious (I was a bit fired up about a certain topic, but DEFINITELY not out of control). I feel AWFUL that I behaved as badly as I did, and apologized, but now she refuses to acknowledge me in any way, and had gone so far as to actively tell my boyfriend to find someone else, AND friend old friends of mine (people I haven't spoken to in YEARS, and people I recently grew apart from) on Facebook to ask questions about me and spread a VERY embellished story about that unfortunate night. She's also told my boyfriend things about that night and subsequent interactions that are not true. I have apologized and owned up to my poor behavior that night, and have been very active and well-received with his family otherwise, but I feel like his mom now treats me differently, and I'm scared that my boyfriend will get fed up and we'll break up. He basically avoids the situation and tells me that as long as I keep being as awesome as I usually am, eventually she'll look silly and give up the act, but I want this in the past and I don't really feel like he's sticking up for me. We've been pretty happy up until now (2 years together), and I wish I could make this better, but apologizing and continuing to stay involved as much as I can with his family doesn't seem to be working. What do you guys suggest?
"Years ago, my mother used to say to me, she'd say "In this world, Elwood, you can be oh so so smart, or oh so pleasant." Well, for years I was smart... I recommend pleasant. You may quote me." - Elwood P. Dowd