I'm a grown ass women. My husband doesn't LET me do anything. He's not my father.
If he has a problem with something, he can express those feelings to me and I will take that into consideration when making my choice of what I want to do.
LOL sorry I had to laugh at the wording of "let", but I get what you mean.
Yes I spend time with friends, I usually make plans with them for once a month girls night, and no I don't have a curfew. SO doesn't have a problem with me spending time with them just as I don't have a problem with him spending time with his friends without a curfew.