I've never had any luck using those kind of hookup sites but one day a friend of mine recommended Saphrina. He claimed that those women (usually in their late 30s or early 40s) were much more open than younger chicks so I decided to give it a try. Best decision I have ever made! If you don't mind f### older women you won't regret using this site. Try it yourself. You can thank me later. Oh, btw, I am not married and have no gf, just enjoy hooking up with women and obviously those married chicks need it!
(BTW: Only issue I found using Saphrian was that there were some obviously fake profiles. Try to ignore them and don't waste your time with them)