I think you should tread very, very carefully with this. Sex between friends sounds like a perfect thing, but quite honestly, it often ends badly and with one person falling in love or having feelings.

That being said, personally I don't think there is anything WRONG with that type of situation.

Do you think you have actual feelings for this guy? Or is it just that you really want to experience sex for the first time?

What do YOU feel is best for you?

Do you think you would be able to handle it if something happened and you did not stay together or stay friends? Could you handle it if it turned out to not be a great experience?

I think it really depends on all of these things.