Thanks for telling me about Sessan. My late boy-cat, Tom, was THE most loving cat in the world. When he died I swore no more cats for me, unless another stray walked in, as Tom had (walked in from the railway line & stayed 13 years).
Then I met Laura at the local animal shelter. Laura is feisty & beautiful, with no tail & a very distinct personality. We immediately adopted each other BUT she will NOT be cuddled. She is very decisive about wanting all four paws on the ground at all times (unless, of course, SHE chooses to lift them). Tom would follow me everywhere, but for ages Laura showed no interest at all.
My vet said girl-cats tend to adore men & boy-cats tend to adore women. Your story interested me, too, when you said: "SHE basically cared little about me ... But she LOVES Hans" & then: "HE is definately my cat and is all over me" - seems to conform to my vet's gender observation!!
I'm glad she's more interested in you now - a little jealousy is no bad thing in these circumstances!!
“When it is dark enough, you can see the stars." - Ralph Waldo Emerson