I have definitely been more conservative in my sexual exploits like @janbb as a single woman.
I have to live in the town I sleep in and years of running into multiple exes in one place sure gives one a pause.
One of my self imposed rules is to only sleep with one guy in a network of close friends. This is not because of guilt but for self respect I have known certain guys to be circumspect and been surprised namely on one occasion when one of my girl friends called me up to tell me how her husbands best friend rated me. Awkward
Still the reason I self impose that rule is primarily for my own self respect, and it has the fringe benefit of minimizing drama I see many embroiled in.
For vacation adventures I have the odd habit of keeping in contact with my flings. In fact one of my “call me when you are in town” guys just recently got married. Good thing I have no plans on returning there in the near future.