11+ (actual number I'd have to sit down with a pencil and paper to calculate, but I'm guessing it's in the range of about 15), and I'm perfectly okay with all of them except for one very notable exception.
A couple of them I probably should have kept at just sex (should have gone the 'friends with benefits' route), and skipped the heavy-duty relationship, since a couple of them turned out to be
much better in bed than in a relationship.
But in terms of the specific guys I've slept with, I don't think sleeping with any of them except for one was a 'mistake'. Getting 'involved' with them might have been. But sleeping with them - no.
The one notable exception was a guy who turned out to be positively terrifying, in a number of ways. Serious drug & alcohol problems arose and...well....let's just say that the involvement of law enforcement was required to get him to leave me alone.
Other than that one guy, I have no regrets about the decision to sleep with anyone. Have more regrets about the decision to get 'involved' with them.