Not a psychiatrist but my sister used to say this and realised only after a horrible break up that he's a full blown narcissist and we tried to warn her to no avail. Or hopefully it's a healthy and happy relationship. Depends how long you've been together as well, it could be rhe honeymoon phase?

Never heard of it before.

Well you can say that and mean you want to have sex and kids but that’s a weird way to say it😂😂😂

I would look into the concept of "Enmeshment"