This is for anyone who's watching the d.ouble l.ife s.mp. I was thinking, in m.inec.raft, one of the hardest things to balance during combat or while fleeing is eating food for health regeneration. While you're eating you can't sprint, attack, or block. So one possible strategy when two people share health points is to have one person dedicated to combat, and one staying back to eat and heal.
So naturally a scenario pops up in my mind: one half of the duo goes out caving / some other dangerous place, and they get in a bit more trouble than expected. When they return home their partner is laying in bed with a wicked stomach ache (worsened by the stress of feeling them lose health). Tummy rubs ensue, with reassuring words that they'll be more careful next time.