I found messages of him asking to sleep with her. why is he still talking to her?

My boyfriend and I been together almost 6 years on and off. He cheated and made 3 kids with 2 other women. After I found out, I took him back and he cut the women off. Recently when I was at his house, I found messages of him talking to his alleged baby mother again. This is the same woman from last year that slept with his family member. He's been sending her money for her daughter and cooking for her other kid AT HIS HOUSE. He said that she contacted him First. But I saw the text of him beging HER To come over. He told her he doesn't talk to me anymore and called me a b#$#@to her. I cooked him food and saw a picture of her eating it on Facebook. She told him that she was talking to another guy but obviously he still DIDN'T care. Why is he still talking to her? He talks really bad about me to her.

I found messages of him asking to sleep with her. why is he still talking to her?
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