poppy

thanks guys for your responses- yeah, I probably should have talked to her about it before- but I figured it was okay because she was there when the relationship started budding and she expressed minor concern, but nothing like when she blew up at me. I am 99% sure that she has no romantic feelings for him and he has assured me that they have more of a brother/sister relationship than anything else. I have tried to talk to her about it multiple times, but she always starts yelling at me and trying to cut me down. I don't want to have to choose between them, because then I would end up resenting somebody- and that is definitely unhealthy.

My older sister has always been a little controlling in my life, but recently it became apparent, just how serious she is. She has her own boyfriend and has never been romantically attached to her roommate. Her roomate and I have engaged in a mild flirtation ever since we met 3 years ago. When it recently turned into something more and my sister found out, she blew up and said that he should be off-limits to me since he is her roommate. She said that she forbid me from dating him and called myself and her roommate alot of unbecoming names. I am not promiscuous at all and have only had 2 other boyfriends. I feel like she is being controlling and unreasonable, but she feels like I was disrespectful to her. I have tried to see it from her point of view, but cannot understand why she feels like she can control a grown woman and man. I understand that the situation may be a little uncomfortable for her, but we are all adults and I have fallen in love with him. I don't know what to do and I want to know if I have indeed broken a cardinal rule of dating. Please help!