You've just been listening to the wrong guy. See...... the definition of a slut is all in the perspective. For example
A woman who likes sex and will sleep with you is fun loving and sexy.
A woman who likes sex and will sleep with others but NOT you is loose and a slut.
So........ any guy who would say about you
Probably isn't getting any off you. Now, or ever
(even if you don't, I still won't call you a slut)