I've had a few like that too, where they go from zero to sixty immediately, without any conversation to speak of, no real knowledge of who I am or what I'm seeking. I say hi, they say let's get married/hop in bed/be exclusive/fly accross the country to live happily ever after, etc. It's one red flag after another and as often as not, their pictures are insanely hot/beautiful. They are either true batshit crazies, or (more likely) garden variety scammers.  I'll pass.