Eugh. This is a complex situation. Hopefully I can shed some insight.
I had a situation that is somewhat similar with a friend, about a year ago. We'll call her Lena, because that name is pretty and I like it.
Lena was like a leech: she took a lot of stuff (money, clothes, rides) from me and never gave anything in return except introducing me to Marble Hornets and I freaking hate Slender man.
We got along fine at first - then her true colors started to show. She was arrogant, self-centered, hypocritical, over-sensitive, took everything as a personal attack, thought she knew everything, and expected everyone to cater her posts around her needs and thoughts. If someone posted something that offended her, she got angry at them, called them 'stupid,' 'rude,' 'shallow,' etcetera. However, she felt it was perfectly fine for her to troll incessantly, insult my friends, make fun of me to my face, elevate her talents above those of everyone else, and in general act like a complete bitch. No one was allowed to point out her flaws - yet she was allowed to deride others for theirs.
After a while, Lena called me out on some bullshit claim about something I still haven't figured out - that was the end of our friendship. She said she'd like to keep in contact but wanted time away from me.
I have to tell you, that time away from her opened my eyes. I felt a lot better about myself, got along better with my friends, my wallet wasn't so strapped for cash and gas was a lot less money-consuming.
I felt guilty for not caring about Lena - financially, she's hard-up (then again, so am i, yet I'm not leeching off of others) and she's probably got some weird pathos going on. But honestly, you have to weigh in this - is your stress, guilty, worry and unhappiness worth the friendship of the one who causes it?
My heart told me to stick with Lena, that she needed me. But my head told me that Lena was a selfish, treacherous bitch who does not need my attention.
Look at it logically, then look at it with your heart - what is this person worth to you, and more importantly, WHY?
Something that helped me to sort my thoughts out was to sit down and make a list.
I made a list of things Lena did for me, of things I did for her, and then things we both did that were bad. I assigned each thing a score (for example, holding her head over the toilet while she was drunk got 10 points while giving her a hundred dollars was worth 25) and subtracted the bad things from the good. Guess what? Lena's score for me was in the negative.
You have to evaluate who's going to suffer, who is going to benefit, and most of all, who you care about most in this relationship. I still feel bad for not keeping in contact with Lena on occasion, but in the end - there are a lot of other people out there who don't treat me like crap like she did, and in the end, I like me better.
I hope this helps: figure out who and what matters more, and most of all - why. Having good whys to something can help you make that executive decision of whether or not you want to stay in contact with this person.
About the guilt thing: The list helped me with that too. Why should you feel guilty for the unnecessary way you are being treated? Look at it from a cold, logical standpoint: Who has the fault? Who should feel guilty and why? Most important is that you never stop asking why. Why are you guilty? Why should you feel guilty? Why shouldn't the other feel guilty? Who supports you, and why? In this case, i support you because this guy sounds like such an arrogant tool who has misplaced hatred on a friend who gives him nothing but support and kindness.
That you apologised shows your maturity. You can only wait for him to change his behaviour now - the ball is in his base.
bitches please