Am I being played?

I've been in a relationship with my girlfriend for 6 months and its been wonderful other than two issues I totally disagree with. She says I'm crazy for thinking the way I do but I don't think so. That's why I'm here, hoping to get some advice. Any and all advice giving will be greatly appreciated. Here it goes.. She was married for 3 years and they have a 6 yr old together. I can understand verbal relationship with an ex for the benefit of the child. Her dad passed 8 yrs ago and she is very close to her mother and brother which I think is great but when she was going thru the divorce her mom and brother thought she was doing her ex so wrong and showed sympathy and sorrow for him. Pretty much they stayed up his ass and thinks he is a saint till this day. Memorial day weekend we were at the lake and her mom called her "ex" which was also at the lake and invited him over our lake house to bb que and to hang out without discussing it with either she or I. He came over and tried everything in his power to be the center of attention. Then the next day we were going to an island to hang out, drink, and have a good time. After an hour of being there I look up and he see him pulling up on his boat and docking right beside us to hang out. He looks over to her mom and said thanks for the invite! I got pissed, she knew it but I stayed calm and tried to enjoy myself. We talked about it and I told her I did not like hanging out with her ex, that it felt ankward and felt that I was being disrespected. She agreed and said it was her mom and brother that had called her "ex" that she had no idea he was coming. A month ago we were going to a huge sand bar on the river to hang and chill with friends as I was driving the boat she got on her cell to check on her child that was with her "ex" for his weekend visitation. I asked how her child was doing. She said he was good and told her "ex" we were on the river going to the sand bar and invited him to join. Last week 5 of our friends, kids, and her brother went to a local state park to swim I'm the springs and I'll be damned if he didn't show up 45 minutes after we got other. I have been living with her about 4 months but had enough and left last week. She tells me she has no feelings or love for him that its all her brother and mother that has brought all this on us. This has put a huge damper in our relationship and she thinks I'm taking everything out of context. Someone please help me understand this and if I am taking it all out of context. She says she loves me and wants no one but me.

You are not being considered. Your girlfriend has not severed the ties with her ex and is being very disrespectful of you. You should tell her that your time with her is important to you and that you do not want to spend it with her ex. That is very selfish and immature of her and her family. Because there is a child involved, the family, including your girlfriend will always have times to spend with the ex on the child's behalf. But they have taken it too far. If she cannot respect these wishes and her family will not, end the relationship. This is a huge red flag for your future with her.