Over the past weekend, one of the stars from the HBO millennial rom-com "Girls" tied the knot in secret, as Allison Williams celebrated her wedding to Ricky Van Veen (founder of website College Humor) in Wyoming and there was another couple making news: Katy Perry and John Mayer 2015!

These days it seems like every couple of months Katy Perry and John Mayer's 2015 relationship is brought back to headlining gossip outlets all over the world, as the insanely attractive couple are rumored to be on again and off again nonstop, so it's hard to keep track - now, a few months after their last alleged breakup, it seems like they're back on once more.

According to People Magazine, Katy Perry and John Mayer 2015 were among the attendants in Allison's wedding, where anchor dad Brian gave her away, and they were quite cozy with each other, reports of the reception say.

Hollywood Life reports that a source present at Williams' wedding said Katy Perry and John Mayer 2015 "looked happy" in each other's company, holding hands in public as they celebrated their two friends tying the knot.

While this is the latest update of Katy Perry and John Mayer 2015, in fact the two musicians have been on-again and off-again for quite a while, since the "Hot and Cold" singer's 2012 divorce to British actor and comedian Russell Brand.

Perry and Mayer had reportedly split in early 2015 only to get back together during the summer, later splitting again as per gossip outlets - and now they're back on!

According to ABC News, over the past few months Mayer and Perry have been spotted in a double date with Williams and Van Deen as well as partying during the Grateful Dead's farewell concerts last July.

Besides music, it's said that the two have one more thing in common: having "Bad Blood" with Taylor Swift, who dated Mayer and later on had a riff with Perry over the brunette supposedly snagging dancers from under Swift.

In any case, it's happy news for Katy Perry and John Mayer's 2015!