I enjoy anal sex, but i find i tense up to much if I know its going to happen and its hard to get it in without it hurting.. any way to fix this problem?

Try using a finger first for a while. It really does feel good...either his or your own. Also, anal beads can give a tremendous sensation. Also, try having him rim your dirty little brown hole. I have also heard of filling a baster full of lubrication and 'injecting' it into your bum. It provides lots of lubrication. If you want to talk further my email is stuwatson76@yahoo.com

My advice (probably not the best out there)
be tipsy to semi-drunk. NOT hammered.

Fact from fiction, truth from diction. Lots of lube and until you can get comfortable with the sensation try using butt plugs and anal probes of incrasing size so you can get use the the feeling and learn to relax so when he goes in it doesn't see, like that big of a stretch.

Try it while having a warm bath.

Relax!! Think about how you enjoy it and think about how hot the guy is. Enjoy it :)

My gfriend has same problem! I found out(through trial and error) that a good donkey punch to the back of the head really suprises her, and it's easier to slam her home!
Seriously, the stuff in little bottles they sell at adult bookstores..It's inadvisable to huff things tho, its killed friends of mine before..