Zac Efron

A bromance is in bloom!

Hollywood heartthrobs Zac Efron, 26, and Robert Pattinson, 28, were spotted hanging out in Tinseltown for a guys' night out Tuesday, E! Online reported.

The dynamic duo kicked off their evening at Pinz Bowling Alley in Studio City, Calif., and ended up at celeb hotspot Bootsy Bellows.

"Zac was seen goofing around and Rob was not even trying, skipping his turn at one point. When they left some of the friends smoked cigarettes, while they all just laughed and talked," an eyewitness told E!

It wasn't exactly a "no girls allowed" gathering, as three ladies were reportedly present in their group.

"Rob and Zac both looked good and happy. Rob showed Zac something on his cellphone and they both started laughing. They were in really good moods."

Tuesday's outing marks the second time the actors bro-ed out this past week, according to E!.

Pattinson was partying with Efron and his new gal pal, Michelle Rodriguez, 36, at Chateau Marmont on Saturday.

The "Neighbors" actor was photographed slipping out of the "Fast and the Furious" actress' home in Los Angeles with an overnight bag in hand the next morning.