Do you think he stopped coming in because of what I said/did last week? Or is it more on him, or his gf?

kay so its kind of a long story but pretty much this regular customer and i have been chatting a lot and i feel like we could actually be friends and hang out outside of work. I kind of already feel like were somewhat friends. Anyway, he came in with a coworker and his coworker ordered a burrito and asked if he wanted the same thing and i was trying to be friendly and said "hes pretty consistent" in like a sarcastic tone, thinking it was just to poke fun since thats what he told me, and his worker went oh she knows your order and he said something like yeah im the burrito master or something... anyway he didn't come in for a week after that, and just on Friday he came in with another coworker and he looked so serious didn't even crack a smile just looked at me with a blank expression, this coworker was also getting a burrito and i went same thing.. and he told me he actually went to starbucks and that his girlfriend treated him.. i felt so awkward after that but couldnt figure out why he had stop coming in.. and just today he came in but didn't get anything or even look straight ahead.. so do you think its cause of what i said.. i know he has a girlfriend now and im backing off but i just feel so embarrass and bad about myself and just not sure how to act if he does come in again. And just wish he had mention his girlfriend sooner.. is this all because of me? Him, his coworker or even his girlfriend.