Stewart, Pattinson highest-grossing celebrity couple

We’ve frequently wondered why Kristen Stewart and Robert Pattinson got back together. Even before her little fling with Rupert Sanders fueled an entire summer’s worth of gossip columns (thanks again, girl!), these two never looked all that happy.

But now, we understand: Together, they’ve helped the “Twilight” franchise rake in $635 million at the domestic box office, which is only a fraction of the films’ $3.3 billion worldwide haul. This makes them the highest-grossing romantic celebrity co-stars, according to a new list from Forbes.

Being involved in real life wasn’t a requirement for the list, but it seemed to help. Pattinson and Stewart handily beat No. 2 — “The Vow” costars Rachel McAdams and Channing Tatum — by a cool $510 million. Not even the iconic Carrie and Mr. Big could compete:  Sarah Jessica Parker and Chris Noth raked in a mere $95 million for their “Sex and the City” movies.

Is it their unique chemistry, or is it the fact that “Twilight” fans will stare at anything that sparkles for two hours? Doesn’t matter — for $635 million, we’d throw love to the werewolves, too.  

Betty White is cooler than you

Betty White turned 91 yesterday, and she received quite the gift. In honor of the actress — who is a longtime animal lover and activist — the Lifeline Program adopted a red-tailed boa from the Los Angeles Zoo in her name.

Betty and the snake, Jacob, starred together in a music video to benefit the zoo last year. “Jacob is good as gold and cuddles in my arms,” says White in a statement that we could only hope to make someday.

Didn’t send Betty a gift yet? She’s asking fans to donate to the Morris Animal Foundation.