First, I agree with Marge--give the guy a chance, he must not know you're beliefs. We all know the saying, What happens when you assume?
Here's my take. It was totally inappropriate for you to start the conversation about SEX. Why would you bring up sex to a casual MALE friend and assume he would want to have sex with you, or commit to you and marry you? Think about it--if he brought up sex right off the bat--how dumbfounded would you be? If you were interested in him and he immediately told you why he couldn't date you--because you were Catholic and he would never marry a Catholic, etc, etc. Do you see how inappropriate talking sex is before you even left the rehearsal? Talk about jumping to conclusions.
this is also ASSUMING that people stick to their thoughts, words, and actions and NEVER change no matter what. Thank God, and I sincerely mean this--thank God He made me in His image and is a merciful and forgiving God. I believe He knows we're capable of changing and bestows graces on us to help us. I'd be lost without that reassurance--His promise to Catholics and non-Catholics.
Go ahead and slam me, but, no wonder, there's no dating going on for the majority of CMers. Intolerance and lack of Christian Charity is such a turn off. This lends itself to another OP asking if posting in the Forums was not helpful in finding a mate. Please re-read your replies and look at them objectively. We all have houses with glass windows.
OK--I said what I needed to say.
That being said, she may very well be an opportunity for conversion by stating her beliefs and values in caring way. You are rt....thank God we have grace and free will to change and grow