What should I do?

So the past couple of months I've been talking to a guy. We're not dating yet but we do like each other and we have slept together. I'm confused about what I should do. Today is his birthday and I wanted to do something special like upload a picture of him on Instagram and letting other people know how awesome he is. The thing is i don't know how he'll respond or if he thinks that I'm moving too fast. I'd like to post something but then I don't want to freak him out. 😏😏😏