Summer Lunches - Weird Vibes

I'm having kind of a weird experience with an associate at the firm I'm summering at (V5) and not sure if I did something wrong. I was staffed on one of his deals, so we've been working together. Have had no issues with him up to this point.

I wanted to get to know him better, so this morning I asked if he wanted to get lunch next week. He said sure and told me to make a reservation wherever I wanted. Since our summer lunch budget is quite large, and I've always wanted to tip a Hooters waitress very well (maybe I could get her number?), I thought it would be a fun outing for us to go to Hooters and tip the waitress up to the summer lunch expense maximum. Ever since I proposed the idea, this associate has been acting very weird.

Since he said he was open to eating anywhere, I don't think it's the Hooters suggestion. I feel like it would be a great male bonding experience for coworkers tbh. That said, he's been acting very weird around me. I'm a little worried about my end-of-summer evaluation now.

Author: J-Dissenting