I only read the first few lines, so here is my initial reaction...

Why would you want to be friends with someone who uses you for sex? I wouldn't ever talk to someone again if I found out they were just using me. Maybe I see things like this because I'm a SA survivor, but even so... I don't believe that good friends will use each other in a most intimate way. That's just slime-ball-ish. How could you ever trust him after he violated your trust in such a major way?

And now that I've read the rest....

This guy was never your friend. He's a jerk. Your judgment is clouded by the fact that you were in love with him. He doesn't treat you well at all. He lies to you. He strings you along. He uses you. And that line about giving you what you deserve? That comes across as a threat more than anything. I'd be afraid of him. I think you take this as him giving you something good, but since it was said via email, coupled with the fact that he deleted his account, I'd be concerned that it is a threat especially since you ratted him out to his girlfriend.

In the end, this guy just isn't into you. He's using you and taking advantage of you. There is no saving the friendship because it was never a friendship to begin with. I hope you can see that this isn't how friends treat each other. I hope that you can work on building your self esteem so that the next time a user comes along you will walk away a lot sooner.