I would bet marbles to chalk that *males* advertising online for “casual sex” in San Diego DO NOT reside in the San Diego area. They just work here 3-8 days per month and are looking for a fun “fling” to spice up their boring (married) lives elsewhere.
A good portion of these *males* trolling for a “part-time mistress” in SD are no doubt executives, outside salespeople and high-ranking active-duty military who stay here several days a month intermittently for work purposes (and hardly ever on weekends).
OTOH, *females* who are trolling for casual sex in SD County are often longtime residents who are both single and married. The single ones have minor children still at home and just want a part-time friend-with-benefits for when their kids are with dad and/or an occasional “traveling partner.” Believe it or not, the married females who place these ads usually do so with their spouse’s consent.
And in case you’re wondering, no, I do not now or have ever placed any ads in this regard :=]