My wedding is in Israel where my sister lives. I just got back from looking at venues, photographers, etc. My sister offered to help me back in Dec. when I brought up having my wedding in Israel. I even called her before I got the tickets to make sure it didn't interfere with her schedule.My fiance and I stayed with her for 2 weeks and though she took us to see 5 different venues, she complained the entire time and stayed out late with friends and to go on dates. Then she would get up early to go to work and after work she needed to take us to see the venues.On a trip to our kibbutz when my fiance wasn't around, she got in a fight with me about how I forced her to give my fiance a ride to visit his brother for the weekend to a place she wasn't familiar with. Even though I said from the beginning that I would get a GPS and it was 20 min from where she lives. She said we were unappreciative of all the work she did and I told her it was hard to appreciate her when she was grouchy and telling my fiance to "Take out the f*cking trash" . She didn't know that he asked me that morning if he should take it out and I told him to wait for my sister to get home so she could show us where the garabage container outside her building was.She also admitted that she had started dating a guy (4 dates) and that her "love life was more important than my wedding"I can't believe she would say such a horrible thing. And to top it all off, the relationship with this guy ended before I even left to come back to the States and she said that horrible sentence to me and the guy wasn't even worth it. She's in her late 30's, never been married so I understand it's important but when family comes to visit, you don't stay out all night! Esp. if you have responsibilities.She's so bi polar. If I don't stay with her, she gets offended and if I do, she doesn't know how to prioritize her time. I don't want this stress right before my wedding and I'm going back to Israel one week before.Needed to vent. Anyone with similar situation or would like to input?