Crossword puzzle clue "we were made for other"

The other other other woman

"We were made for ___ other"

Particle physicist whose findings were first accepted by Einstein, but later were shown to be fraudulent

"Wish you were here—__ were there"

"We're on to you!" (and a hint to how this puzzle's other four longest answers were created)

Cuisine that combines two other cuisines as if they were atoms

"18. In kindergarten art class, while other boys were drawing things like tanks and dinosaurs, I drew ___,"

Hashtag on a photo of a celebrity couple I wish me and my significant other were more like...because then we'd be rich and famous