Can someone please explain this one to me?

I’m a bit dense and don’t get it.

I think the idea is that their life on this island is more enjoyable than their previous life. So they decide they want to stay there after all.

Which honestly is understandable on an emotional level sometimes but realistically they would be dead after a few weeks from unclean water, wildlife, infection, illness, etc

I mean if they’ve been there for two years I’m sure that means they’ve learned how to purify water at least to a drinkable state, but also, has the rescue beacon even been working.

I bet the dude never actually turned it on and has just pretended he did, playing the long game to get the lady to wanna spend time with him.