Let me take you back to April 2008 - it was a fairly big month.
Forty-two university students were kidnapped in Iraq, mobile phones were officially allowed to be used on European flights, the Olympic torch went through a hell of a time, the Pope visited the US, Blade actor Wesley Snipes was sentenced to jail for tax violations and Grand Theft Auto IV was released.
While there were other notable incidents, events and decisions, it also brought about this photo.
Ten years ago today, someone took a photo of Fall Out Boy bassist and lyricist Pete Wentz walking down the street looking a little morose, while a fedora-wearing Bruno Mars stans the shit out of him.
It's tough to believe this moment happened, but it totally did.
According to Rolling Stone, April 2008 was the time when Pete started taking LSD to improve his songwriting prowess but unfortunately it just made him distracted and unproductive.
It's not hard to understand Bruno's expression either as Fall Out Boy were enjoying some serious mainstream success after releasing Infinity on High a year earlier, which included bangers like 'Thnks fr th Mmrs', 'This Ain't a Scene, It's an Arms Race' and 'The Take Over, the Breaks Over'.
Pete Wentz was, arguably, the most popular member of the band, according to All Music. Around that time he also publicly acknowledged a suicide attempt, had naked pictures leaked and had a high-profile relationship with Ashlee Simpson.
By comparison, Bruno wasn't even in the same league.
Before the Hawaiian born singer made it big, he was writing music for Alexandra Burke, Travie McCoy, Adam Levine, Brandy, Sean Kingston, and Flo Rida.
It wasn't until 2009 until he featured on Travie McCoy's track 'Billionaire' and B.o.B's 'Nothin' on You' that the public knew about his gorgeous vocals.
Pete was actually asked about his thoughts on the photo two years ago by New York Mag and he said: "What an odd picture. I think specifically because it's dated but also how it almost seems posed due to everyone's faces and demeanor. I'm a big Bruno fan and have been since he sang 'Billionaire' with Travie [McCoy]...he's such a monster in the best possible way."
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But sadly, according to Bruno, he wasn't actually excited to see Pete casually walking down the street like a normal person.
He told 104.3 iHeart FM he was actually looking at a paparazzi photographer who pushed past him to take a picture of Pete Wentz.
So here's 10 years to one of the weirdest yet most endearing celebrity photos.
Featured Image Credit: PATopics: Entertainment, Celebrity, Music, Funny