<human>: Condense the text into a few key points

My SO and I have been together for 6 months now. He has a child with his ex so obviously they stay in contact with one another.  When her and I first met, we got along quite well. Even so much that my bf and I went on a double date with her and her then bf. All was well until about two months in and her whole personality changed. 

One weekend we wernt able to have my bfs son over because we had a prior engagement that we had told her about weeks earlier.  But when it came closer to the day she started throwing hissy fits. Saying that we had to take the baby because she wanted to go out. My bf stood his ground with her, which in thier past history she had him wrapped around her finger.

We went to our wedding and picked up my bfs son the next day and carried on as usual.  Then she lost her god damn mind, all of a sudden she turned into this evil person (which she's teally been all along) im not allowed to pick up or drop off my bfs son anymore,  apparently im also a controlling bitch who is stopping him from seeing his son more and her other kids. ( she has three kids all have different fathers) she is constantly txting my bf to badger him for money or to make him feel like a terrible father. Im getting really fed up with all this bullshit. Ive asked my bf if I could ralk with her to try and clear this up or at least get ourselves back to some sort of amicalbility. But he says for me to stay out of it. I dont know what I should do
<bot>: my bfs ex is causing a lot of trouble and stress on our relationship.  I want to confront her but bf says no. Need advice!