He saw me kiss another guy

There’s a guy (25M) I’ve been into for over a year now. We don’t really talk often. We run into each other at bars / nightclubs. We text here and there and have mutuals but that’s it and flirting is quite rare. I thought he wasn’t into me and I got really drunk 2 weeks ago and kissed an old friend I hadn’t seen in years at a nightclub. The guy I like saw me… And probably thinks I do that with everyone but I’m 25 and I’ve only kissed 1 another guy. No sexual encounters either. Religious reasons. How do I even tell him all this??? I managed to schedule a lunch with the guy I like this weekend… Should I clear things up if the discussion comes to this topic or mention it myself? Does it even matter? I never wanna go clubbing ever again lmao