I so closely related to the fiance's qualms about her boyfriend's relationship with his sister. I don't think you are imaging things. By the way, some of the posted responses were quite good...the one I found very disturbing was undoubtedly from a male..."If the sister is hot...? it would be understandeable..???" HUH? You sound sicker than anyone I have ever noted in a forum. Sounds like you promote sibling intimacy "if one of the sibs is hot??"

Be that as it may...my history was similar to the writer's and even more heightened. It turns out his sister was/is "hot" (if you like tiny very tiny women) . Jet black hair and blue eyes. But her behavior was not normal. She also jumped up on her brothers, wrapping her legs around them (at age 20?) She was especially close to my husband. She would show up unannounced at his apartment, and because it was not my abode (and I was new kid on the block), I never approached her about it, but it was obvious she was trying to "catch us" off-guard. I even found her peering through a window once...freaked me out. The constant visitations (daily) were bold and quite obnoxious. He was not the one pursuing her and remained level headed.

When we went on vacation once, I asked a neighbor to watch his apartment because I did not want her involved. Ultimately, she did watch the apartment but I was creeped out about her sleeping in "our" bed while we were gone.

His mother was also abnormal about him...a therapist told me that this relationship sounded like a "romance." I felt that the mother used her daughter (mother could not drive) to disrupt our relationship...and she called a lot and got "cozy" a number of times.

Conclusion: whatever does not feel "right" or "creeps you out" is most probably NOT you, but the situation. These "feelings" exist for a reason and are telling us something. ALSO: one of his brothers reporatedly never had sex in his life and went through his marriage/even the honeymoon with his underwear on the whole time. Something was definitely amiss in this family.

The sister finally left us alone after we changed locks, had a talk with her, and insisted on setting boundaries. Now we never see her...and would like to because we really care about her. She is a tragic figure. So beautiful, but no guy stays with her. She is smart, adorable, and a good person deep inside. Wish I could tell her that I failed to see her need to be with her brother as much as possible, because her father was "absentee"...he was oldfashioned and not available for her.

Love you wherever you are. God Speed.