"Do you know, I think we're lost."
"Do you know what? I love you."
I suppose it's quite similar to suffixing a sentence with "you/y'know?", as in:
"I just wanted to talk to you, y'know?"
...although, looking at that now, I feel it has a different nuance which I'd find difficult to define. Anyway, that's not really my point. I'd like to know if any other languages you know of have this kind of construction, or at least one with the same kind of meaning. For example, I can't say I've ever heard a Spanish person say:
"Sabes, pienso que nos hemos perdido."
"¿Sabes qué? Te quiero."
BUT I think I have heard someone say something like:
"Te quise ver, ¿sabes?"
Any and all languages very welcome!