My Tinder ta! Opinions?

So in September I matched with a guy on tinder. I messaged him about a day later, and the next day I walked into class, and there he was. Only he was my TA. Neither one of us really acknowledged this or each other. However, as the semester has gone by we often talk before and after class, joke around, etc. He is a nice guy though, so I'm not sure if this is necessarily flirting. However, he hasn't deleted me off tinder yet.
I like him, like a lot. He is 100% my type. Also, he is 25 and Im 22, so it's not like I like him just because he is my TA or anything.
Opinions? Should I do something, say something?
My Tinder ta! Opinions?
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