It's a case-by-case basis, my mystery mobian fellow. Usually depends on how hungry one of us are. For my boyfriend or close friends like Mukiro, we could probably go a long time without swallowing one another, but we usually know how to read the room if one intends to eat the other. With some friends or mutuals though, pot luck, maybe we just enjoy the moment, otherwise I'm caught up in the moment that suddenly I'm sliding down their gullet. And then other times, they're going down mine.
How would you like to try your luck and see how long you last, hm~?