Anal??

I've been with my husband for almost 6 years and married for 4 months. I kinda told him I would try anal with him when we got married lol I know, silly, but now that the time has come I am so nervous about it. He hasn't pressured me at all, but I know it's something he wants to try. Both of us have never done it. I'm nervous that he will like it more than me and then he'll want that more than regular sex. I really don't think I will like it either... I would just be doing it to make him happy... Any input or shared experiences on this would be great..