Friends With Benefits

My best friend and I have a history of romance. When we were 14 we had a three week relationship that turned sour when I had stronger feelings for her than she did of me and we had a big fight and didn't speak to each other for a few months. We have always been close friends since.

Last night we got drunk, and she confessed that she wanted to make out but was afraid of us fighting again and I agreed and said that it would not be anything romantic, strictly to relieve sexual tension since neither of us have been in a relationship for a while which she agreed to.

So we made out, nothing too heavy, and we both enjoyed it. Now I am wondering whether we should make this a regular thing. Neither of us have done friends with benefits and there's always the chance that one of us might fall for the other, but I think strictly for relieving the sexual tension would be a good thing.

Now my problem is how to go about doing this. I'm afraid if we continue to do this drunk it might lead to sex, and neither of us have had sex with a girl and I am not sure whether or not drunk sex would be a good thing. It would be good to make us more relaxed since I've never had sex, but there's other reasons why it might not be a good idea because it might be harder to communicate or things might get out of hand. I'm also not sure how to ask her about being friends with benefits or how to set up rules for this.

Does anyone here have experience with friends with benefits?