Foggy and Matt have a close friendship, made even closer by their ease and comfort together. Not helped is a habit of touching, walking close together or arm in arm, and Foggy's mother henning. At this point, they are both accustomed to a few mistaken impressions as to the state of their partnership. Over time, it's become a big joke to them. They're okay with it.

... Maybe too okay. As it happens, time passes and it's more and more like being in a real marriage. By the time they realize they've crossed boundaries (like, without even thinking about it), it's too late.