I don’t know how to act on a date...

So I just got out of a two year relationship, and there’s a guy I have always been friends with, and just a few months ago in May he left for basic training for the army, when he got back he asked if we could get together and catch up, my boyfriend(now ex: was very controlling) told me no bc even tho he was also friends with the guy, he doesn’t trust him. So we broke up a couple weeks ago and today I was talking to my friend (Andy) and we were just chatting and I asked him if he was busy tomorrow night. The conversation went like this

Me: are you busy tomorrow?

Andy: I get off at 5 but then I’m free

Me: you wanna grab a bite to eat, catch up, I haven’t seen u since u left for basic.

Andy:yeah sounds great, you pick the restaurant and I’ll pick you up at 7.

And at first I was like okay this is awesome I finally get to see him and catch up with him and it’ll be great. My coworkers, all found out that I’m suppose to get dinner with him tomorrow, and the part where he said he’s picking me up, automatically makes them assume “date”. And then (I overthink everything) I started overthinking, and I’m now sitting here going “oh what if it is a date, what do I do, what do I wear, what do I say, what if he tries to kiss me...” (ya know not that I would mind or anything, let me tell ya, two months of basic training makes a guy suddenly go from zero to DAYUM) like he for real got hot. Like in his face and abs and just ohhhh. Anyways that not the point, it’s now got me thinking that it’s a date, and I HAVE NOT BEEN ON A DATE IN TWO YEARS. TWO FREAKING YEARS. And I’ve come to the conclusion of, if this is a date, I don’t know how to act. Also what do y’all think, is this a date? And what do I wear? What do I say? How do I act? I want talks brutally honest opinions.