How do I leave an emotionally abusive boyfriend and relationship?

I was the one asking for advice about my emotionally abusive boyfriend a month ago (I don’t know if you could see my past questions in my profile, but they’re there).

We’re still together now but I don’t want to deal with these anymore. It’s totally a toxic relationship. I don’t want to stay anymore. The reasons why I stay is because he hasn’t paid me yet for losing my Wacom Bamboo pen, and some of my stuff (clothes, etc.) are still in his place.

I’m sick with this. I can’t stay with someone who tortures me mentally, emotionally and verbally all because of my promiscious past.

He has told me a lot of I love yous and that I’m the one he chooses to be with and to spend his life with, but all he makes me feel is shit. If ever that happens, I know I won’t be happy.

I have to leave to preserve myself ‘cause I’m slowly losing myself in the toxicity of this relationship. He wants me to change everything about me, the way I dress, my values and beliefs in life, my past. He tells me that I am a slut and I don’t deserve to be treated well amd special because I was once promiscious.

Whatever. I’m sick of this. But can someone help me how to leave this relationship without regrets? Because it’s the little things that are hard to forget.