"She's the best... I've had dinner with her a handful of times now and she's just the coolest human being... She said something to me about how it gets hard to walk down the street (and) she goes, 'You know you get to a certain point it's hard to walk...', and I was like, 'No, Lady Gaga, I don't know how it is for you at all, but that's sweet that you think so'." Sophia Bush loves pal Taylor Kinney's fiancee, but insists they have very different lives.