I live a clean lifestyle and have a girlfriend who does the same. Her past, or lack thereof, is one of the chief things that attracted me to her. The kind of moral values an "ex"-lesbian would have are not those that I desire the future mother of my children to have. If she's capable of going against nature and licking carpet, God knows what other immoral things she's capable of. Lesbians - great for porn and such, but a relationship with one is the last thing I want.
Much the same applies to smokers, drug users, or ex-whores. No fucking thanks!
-Warik