Guys - if you suspect that your girlfriend is or has been a hooker, what will you do?

She is really good in bed and her imagination is stronger than yours. You suspect that she learnt some tricks the wrong way. Asking her if she had been a hooker is impolite. It is possible that she actually learnt all this the "regular" way - after all everyone has a past. How will you resolve the dilemma? Girls are really good at hiding their past.
Guys - if you suspect that your girlfriend is or has been a hooker, what will you do?
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