If you are known to be a good lover (feedback from ex-gfs and some wgs), then you don't have to worry about whom the girl (civi/wg) has slept with before. In fact it is so much more ego-uplifting to get a great compliment from an experienced girl as you know she has other guys to compare you.
That is why I never understood why so many guys prefer virgins or inexperienced girls. These type of girls have nothing to use as comparison plus they always think another ethnic group would be better or more romantic. If you are good, they will have regrets later on after leaving you for other guys or ethnic groups.
But then again, if you are bad in bed or inexperienced, I can see where you may get your insecurities from. It is time for you to get better. Find a gf to work on your techniques.