Frank told Alexis there was no need to wait up for him. Ever. His younger lover knew the score: nighttime was his time. That’s when all the criminals and scum of the Earth came to play — and as such, so did The Punisher. He understood that it was often simple, genuine concern for Frank’s safe return that caused Alexis to lose sleep. But Frank made his rules for their relationship very clear.
After losing his family so long ago, Frank still struggled with this sort of thing — being in close relationship with someone. Frankly, it was a miracle Alexis stayed with him, even after learning of his dual identity. Perhaps it was just a sign that he could have both things: his job, and his love. But Frank still had a long way to go towards accepting it.
When Frank returns to their shared apartment, he finds Alexis half-passed out on the couch, after clearly anticipating him all night. “Go to bed,” Frank grunts, removing his coat with palpable struggle, his body wrecked and covered in blood —only some of it his— from the evening’s activities. “Told you I don’t like it when you wait up for me. You never fuckin’ listen, do you?”