Mark Wahlberg and 50 Cent

Mark Wahlberg and 50 Cent on the second night of NKOTB’s Main Event Tour at Madison Square Garden in New York City on June 22, 2015.

Ryan Kravontka

Well, we’re jealous.

On Monday night at Madison Square Garden, Mark Wahlberg (in his past life lovingly known as Marky Mark) surprised fans by sauntering on stage in the midst of the New Kids on the Block concert.

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But wait: Who brought the Ted 2 star on, you ask? None other than Queens, New York's very own 50 Cent, who also made a surprise appearance at the concert because, really. Why wouldn’t he?

Donnie and Mark Wahlberg

Donnie and Mark Wahlberg on the second night of NKOTB’s Main Event Tour at Madison Square Garden in New York City on June 22, 2015.Marcello Ambriz

50 introduced Wahlberg -- right after brother Donnie finished singing Marky Mark and the Funky Bunch’s 1991 hit single “Good Vibrations” -- by announcing to the crowd that “we’ve got some good vibrations here tonight.”

The best though? The true brotherly love posted on Instagram later that night: 

If you weren't one of the lucky few who witnessed this live last night, don't worry. We've got it all for you right here below:

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