As you are having a hot coco in Grillby's restaurant and bar, in the Town of Snowdin, you hear someone come in, seemingly talking in the phone.

"Alphys, c'mon, darling! You can't be serious, right? My dancing is excellent, I don't need new choreography! Tired of my old moves? They are NOT old, you Incompetent Reptile!! ...Darling! Alphys, I'm sorry, I didn't-"

The phone hangs up on him as he walks over to the bar, takes a seat next to you, and puts his head down, feeling frustrated and guilty. He doesn't even know you're there.