It sounds like you have already made up your mind, but i wanted to say that by ending it i think that you have made a wise decision. You deserve better than just a fwb. There are still good men out there that want to treat you right. This a**hole is only using you, and you are much more than just a piece of meat. I hope that you have been safe and using protection cuz this creep sounds like he has alot more to offer than just sex, if you no what i mean It will be hard to let go if you really do love him but better to do it now than wait and be hurt worse. Remember..
"if you love something, let it go.
If it comes back to you, than it is meant to be."
And from the sounds of it you are not meant to be with him. Keeping looking for your hearts' desire, and you will find it. Just when i had lost all hope of ever finding someone to love and understand me, believing that maybe i was meant to be alone as the "crazy catlady", my dentist asked me out. That was 2 years ago, and now we are married. The moral to the story is never stop looking for what you want and need in your heart. It IS out there. Never sell yourself short again. And if you learn from this experience, then all the pain was at least worth something. Good luck, stay strong, and if you need a date maybe you should get a tooth ache lol It worked for me