Don't worry. You aren't a dog, and the two girls you slept with did so of their own volition, so what? As long as you haven't lied to anyone or led them to believe that there was something more to it than sex, who cares? If they now regret it or can't handle friendship with you having seen you in the buff, that's their problem, not yours. By all means talk to them and try to reassure them that their friendship is important, but if they can't handle the situation you can't be held responsible for their lack of maturity. They should have thought of that before they bedded you.

Remember, it's only sex, not heart surgery!

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'Don't knock masturbation - it's sex with someone you love'

- Woody Allen