Search Results: reading a smile

At the beginning of July, a surgeon I work with on occasion and never really talked to but I’d been majorly crushing on liked me on tinder. I matched with him and sent him a message but he never responded. Since then, I’ve been actively trying to talk to him since he must at least think I’m cute. I don’t see him a whole lot so it’s been slow going but we’ve slowly started chatting. He waves or smiles at me in the hall, and the last week he’s been starting to goof around with me and tease me, but it’s been work related stuff. I hit the wrong button last week on my machine and he’s been joking about it whenever I work with him. Also, a few weeks ago I was walking towards the building through the parking lot and I stopped to let a car drive by me and it was him, and he stared me in the eyes the entire 5 or so seconds it took to pass me.
Am I reading way too much into this? I feel like since I really like him I’m interpreting his friendliness as signs that he likes me. I’ve been trying to pay attention to how he talks to other girls and he doesn’t use the same joke tone or goof around with them. If he liked me he’d ask me out though, right?
I really need some advice!