Hello! It's good to talk with you again. I am glad to hear that the previous answers helped. I am happy to be here for you!
From what you said, it sounds like you are starting to see your boyfriend for what he is. You are no longer looking at him the way he wants you to see him, through his own eyes and in a way that puts him on a pedestal. You are gaining self esteem and realizing that you do not have to be treated so poorly. And because your self esteem is improving, you are opening up to the idea that being treated badly is not something you deserve. You deserve much better.
Also, you are pulling away from your boyfriend because he is now on another level than you are. He keeps acting the way he always has- thinking of himself first, cheating and lying. For some reason, that is how he feels it is acceptable to act in relationships. But you are growing, becoming more emotionally healthy and his view of relationships no longer fits yours. So you are pulling away, turned off by how he treats you.
The other women he is with probably have low self esteems. They may want to be loved by someone that makes them feel special because that gives them the sense they are important. They either do not want to see your boyfriend for who he is or they choose not to see it. Either way, they may keep coming back because like a drug, they need someone to treat them in a special way, buying them gifts and paying attention to them. They cannot give themselves value and see that they are settling for less than they deserve.
Because your boyfriend is with these other women, it is natural for you to feel turned off. You don't want to share him. You want to feel you are the center of his world. But he has shown you that you are not, which to you, being more emotionally healthy, is a turn off. Also, there is a big risk for disease, which is a consideration. He could hurt you by passing something onto you and given how he treats you, he may not care or try to take responsibility.
Showing him who you really are, physically and emotionally, is no longer an option for you. You have been too hurt by him and have grown too far beyond this type of relationship that it no longer works for you. Focusing on leaving and finding a healthy relationship are both good goals for you. You deserve a relationship that has mutual love and understanding. And you need someone who will treat you with respect and kindness, putting your needs first. Your current relationship does not fulfill those needs for you.