You acted completely like a free hooker. Now there is absolutely nothing wrong with that if you are able to still feel good about yourself and let players go when the time comes (the time has come) without feeling "used"
I suggest that you stop using your vagina to try and get a boyfriend. It very seldom (if ever) works out in your favor. Guys to this day still think that if you'd **** them on the first meet then how many other "first meets" have you had? They wonder if you have no standards or personal boundaries... which you apparently do not if you've made a habit of doing what you did with more guys then not. You need to be able to offer a lot more then free sex in order to engage a guy emotionally.
Buy fking with your head the way he did, he's keeping himself firmly planted in your consciousness and thereby making you really give yourself wholly to him when he comes back for another round of **** and chuck.
Block and delete him and work on your personal boundaries, your standards and your inability to say no to stranger men who you get too involved with before even meeting them.
Learn from this and change up your dating strategies or this will keep happening to you for your entire life... Any man that you do hook with your vag will not be a good catch more likely then not.
“The willingness to accept responsibility for one’s own life is the source from which self-respect springs.” ~Joan Didion