Capping off a whirlwind period that included celebrating Kristen's 23rd birthday together, rocking out at Coachella and spending time in New York, where Kristen attended the Met Gala, Rob quietly turned the big 2-7 on Monday.
And while we were told that Kristen was planning to hold a birthday gathering at her house for Rob and assorted pals, now we're hearing that things are a little rocky between them.
"They are absolutely still together but are having some difficulties right now," a source told E! News Thursday.
At the root of the issue? "Priorities," the insider says. But "they'll be fine. I do not foresee a split, they are just crazy in love. This is just another bump in the road."
Rob and Kristen flew back to L.A. from New York last Wednesday, but have not been spotted out together since.
"He's been hanging out with the boys a lot, and she's been with her girlfriends," another source exclusively tells us. "They seem to be living separate lives at the moment, I haven't seen her around at all."
Reps for the actors could not be reached for comment.
—Additional reporting by Melanie Bromley