First of all: who on earth is paying these researchers and why are they wasting their money on them?
Second: I knew their conclusion already. Why can’t someone pay me to tell everybody? I probably offer way better rates. Just sayin’ . . .
While the article is kind of all over the place (including defining love — at one moment it’s a flimsy emotion and paragraphs later it’s actually commitment and putting your partner above yourself? Make up your mind! Personally, I was raised with the latter definition, which is what works:
Lasting marriages combine commitment, passion: Researchers
by 
Good omlettes combine eggs, water.