You may have heard about the currently trending new type of relationship known as the “stayover relationship.” If you haven’t, here’s the gist of it: More than friends with benefits, but not as committed as a cohabiting couple, the stayover relationship is what happens when two people stay over at each other’s places a couple of nights a week, but don’t actually live there. Usually they don’t even keep any of their stuff over there, but a toothbrush is probably permissible just so you don’t have to go lugging one around with you all the time. (Although maybe you do that already. I don’t know. Do you?)

Anyway, researcher Tyler B. Jamison of the University of Missouri is the woman who made the trend known to the world; she studied this type of arrangement by looking at the relationship behavior of 22 college students and graduates who maintained one and published her findings in an article titled “We’re Not Living Together.” The idea has caught on, and it’s since started surfacing all over the place. Some people think it’s an indication of young Americans being unwilling or unable to commit to stable relationships, while others tend to look at it as being a wise choice connected with wanting to make sure you’re with the right person before settling down. But here’s the angle that no one’s really covered yet: How do stayover relationships compare with other types of relationships?

Take, for instance, the middle-distance relationship.

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You’ve heard of long-distance relationships, but what’s a middle-distance relationship? Basically, it’s a relationship that occupies the middle ground between living within easy transportation distance from each other and living at least a couple of states apart. It’s not that difficult to go over to your significant other’s place, but if you do, you need to bring a change of clothes with you because it’s not close enough for you to just swing by your own place in the morning. Inconvenient, perhaps, but everyone is willing to make sacrifices for the person they love, and this is one that some people make.