I'll try to keep it short. 

My parter dated this woman for three years, it was his first relationship since moving to a new state, it was her second relationship. Her first boyfriend lives with her family if that's any indication of how she deals with relationships. Now she cheated on my partner about 11 times during their three year relationship, two years of that spent living together. Their breakup was messy and she moved out to her new boyfriends house on his last birthday. 

During all of that him and I had met and we're talking, but I had no idea this was going on and we were just texting friends because I was in Australia on holiday at the time. Now when we first started dating after I had come back it was about two months since his break up I had no idea the time line or what had happened. Slowly over the past 9 months that we've been together I got the whole story. Here's the issue they both keep trying to be friends, under normal circumstances I wouldn't care but she tries to deceive him about hanging out. Example: she said she was dropping off a poster from of movie (she works at a theatre) but she showed up two hours late, drunk, no poster. She also threw a hissy fit about coming to a party at our apartment to which she ended up showing up to and went through the bathroom which is now full of my things and I think she rearrange stuff and I know she took hair products. 

With all of that I'm supposed to go with him to meet his parents in three weeks. He's assured me that he loves me so much in fact he wants me to meet his family which it took him two years to bring his ex to meet them. Now I'm hesitant because I just can't shake the feeling something is wrong, I know they would never hook up again or anything. I just can't find words to describe it.  I feel like their friendship is toxic, that her trying to get us all be friends is strange, and my boyfriend defending it and pushing me to be her friends is just too weird. Therefore I'm hesitant about the relationship at times because I just think it's all so fucked up. Help!
user
Boyfriend has overbearing ex who wants us
assistant
I'll try to keep it short. 

My parter dated this woman for three years, it was his first relationship since moving to a new state, it was her second relationship. Her first boyfriend lives with her family if that's any indication of how she deals with relationships. Now she cheated on my partner about 11 times during their three year relationship, two years of that spent living together. Their breakup was messy and she moved out to her new boyfriends house on his last birthday. 

During all of that him and I had met and we're talking, but I had no idea this was going on and we were just texting friends because I was in Australia on holiday at the time. Now when we first started dating after I had come back it was about two months since his break up I had no idea the time line or what had happened. Slowly over the past 9 months that we've been together I got the whole story. Here's the issue they both keep trying to be friends, under normal circumstances I wouldn't care but she tries to deceive him about hanging out. Example: she said she was dropping off a poster from of movie (she works at a theatre) but she showed up two hours late, drunk, no poster. She also threw a hissy fit about coming to a party at our apartment to which she ended up showing up to and went through the bathroom which is now full of my things and I think she rearrange stuff and I know she took hair products. 

With all of that I'm supposed to go with him to meet his parents in three weeks. He's assured me that he loves me so much in fact he wants me to meet his family which it took him two years to bring his ex to meet them. Now I'm hesitant because I just can't shake the feeling something is wrong, I know they would never hook up again or anything. I just can't find words to describe it.  I feel like their friendship is toxic, that her trying to get us all be friends is strange, and my boyfriend defending it and pushing me to be her friends is just too weird. Therefore I'm hesitant about the relationship at times because I just think it's all so fucked up. Help!
user
boyfriend's ex girlfriend is trying to be
assistant