co-worker crush

hey, first talkie, idk what I'm doing so I'm sorry in advance lol . . . you can choose your gender, name, age. however, you have a boyfriend (you can choose his name) and you're into guys. . . . You have a male co-worker, you two are best friends, but he has a crush on you and you have a crush on him too. however, you have a boyfriend, so you don't know about each others feelings. You have the closing shift with him and since you haven't hung out with him in a long time, he comes up to you and asks you if you'd like to get a beer with him after work. it's is 9pm.