John Stamos Is ‘Heartbroken’ The Olsen Twins Won’t Join ‘Fuller House’

Heartbreak? You got it, dude.

Our hearts were definitely broken when we learned, officially, that Mary-Kate and Ashley Olsen weren't going to journey back to San Fran for the new "Full House" reunion spin-off series "Fuller House." And it looks like we weren't the only ones experiencing all the sads over this news.

Uncle Jesse a.k.a John Stamos, too, was really bummed out that the duo won't be reprising their shared role as little Michelle.

Stamos tweeted on Friday (May 22) that he was "heartbroken." Which, given the timing of the note -- the twinzies were confirmed as non-returnees the same day by executive producer Robert L. Boyett -- was an obvious response to the upcoming lack of Michelle(s).

But just in case there was any question about whether the hashtagged anecdote was related to the Olsen girls, Stamos also added a quick addendum of support for the pair who played his on-screen niece for so long.

"I understand they're in a different place and I wish them the best," the hip, hunky uncle wrote. "I promise you will not be dissapointed (sic) with our reunion and spin off!!"

Stamos, whose post-Jesse Katsopolis career has included everything from swoony Oikos commercials to a recurring role on "ER" and, um, the occasional gig drumming for the Beach Boys, has been a total champion for the upcoming Netflix series since he announced it himself in April.

"This is not a money gig for any of us," he continued, this time on his Facebook page (presumably to skirt the 140 character limit). "Quite the opposite - we want to give the fans what they deserve for supporting us for so many years."

"[W]e all just want to have fun - do it in a classy way on Netflix and have a good time," he added. "Sad that a few don't share the rest of the cast's opinion. I can only wish them the best."

All we can say is, aw, nuts.