Is it okay to キッス someone on the first 日付 if it would be their first kiss?

I just went on a movie 日付 with a guy I really like, when he was dropping me off, I had the perfect time to キッス him and I didn't. But if I did キッス him it would have been both of our first kiss. Should I have kissed him? Oh によって the way, we're 11.