acquiantance rape

My best friend raped me last year, and I'm just starting to deal with it.

Anonymous
asks:
Last summer ('06) I was pressured to sex by my former best friend. I kinda blocked it out and it's come back with full force now. I had a flash back when having sex with my boyfriend about a week ago and that was horrible! Any idea how I can cope with that? And how do I cope with the feelings of guilt and shame. I really feel like the whole thing was partially my fault.....