There was a period when I used to hunt for lovers (I used forums, online dating, etc.) and managed to get a few. It's then that I found the best shags were always those women who (as Micky Flanagan puts it) were absolutely fucking mental! (thanks for the link Roland).
I won't bore you with details but it was amazing the range of Jekyll and Hyde personas I found. But even though the sex was great dealing with the fucked up personalities was too much for me, especially being married so I didn't last long with them.
There is only this one that I still see now and again, the sex is so fucking good I cannot seem able to let her go, nor she me (apparently I'm good in bed too, so I also must be fucked up in the head)... we broke up many times but we always end up fucking again. Don't know how long this is going to go on for - it's been many years now. I think she knows that as long as she offers me no-holes-barred access and I get to do pretty much anything I want with her in bed I will always come back for more.
Oh yes, and she reads the fucking Daily Mail too, apparently she loves it! She's a nutcase I tell you!