What else do they want?

So I'm on vacation and I was swimming at the pool and a guy came by and talked to me for a few minutes, and he seemed normal and all. He asked me if I wanted to drink something and I said no. Then he asked if I could go out with him (I'm 19 and he's 35) and I said I was sorry but I'm lesbian and he said "it's okay you haven't tried a real man yet" and I said I'm not interested and he said "bitch" at me and walked away I'm not sure how to feel about this honestly.