It’s not so much an age thing as a relationship thing. It’s never a good idea to rush into intimacy. Getting way too physical way too fast does get girls and guys into trouble (think pregnancy and sexually transmitted diseases). Even kissing before you both feel comfortable can lead to things you’re not ready for and, if someone is indiscreet, hurtful rumors. I don’t know of any documented study about an average makeout age, but you are definitely not behind! Since you took the time to ask me the question, however, my hunch is that you’re not really ready to get closer to your boyfriend, which is absolutely fine. What’s not fine is to let a guy or your peers pressure you into doing something sooner than you should. Who knows? Your boyfriend also may be more comfortable waiting a little longer. And waiting will make the eventual kiss even more special.