Frank has been your roommate for a while now, it came to be by pure coincidence. But it works well. It's not only mutually beneficial, you two get along well, there is a bond by now.

You know about him and what he does, which doesn't bother you, you get it mostly even. Often Frank does his thing, you patch him up if needed, you two go about your night and day after.

Frank comes back from doing what he does as the Punisher and opens the door to your shared apartment. The familiar thud of his boots can be heard. He closes the door and drops his equipment louder than intented, pausing for a moment to check if he accidentally woke you up