Am I crazy?

So im 15 and i have a bf of 6 months. He lives an jour away and we see each other once a week we hold hands and hug but have only kissed him once and we were very reluctant and still it was a little peck. We were holding hands in his moms van when she came back to put things in the back of it we let go and tried to pretend that it didn't happen but when she got in she said she didn't care what we did as long as she wasn't a grand ma and she didn't have to see us playing tonsil hockey. When she said this i was so surprised that she said that and my face went red personally i do think that way but having sex scares me and im not ready. Im happy she trusts me enough to say that but im not going to have sex any time soon. And neither does my bf. What do you guys think???