Nick Jonas and Ashley Greene Walk Down the Aisle!

Yes, that aisle! But only as best man and bridesmaid! Sorry!

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On Saturday, April 15, Nick Jonas and Ashley Greene attended the nuptials of their good friends Gregg Garbo (Jonas Brothers' bass guitarist) and Paris Carney.

Phew! That would have been awkward, considering Ashley dated Nick's brother Joe Jonas for nearly a year before they broke up in March 2011.

The Twilight star is currently dating Reeve Carney, the bride's bro and Spider-Man: Turn off the Dark Broadway actor. Still, she's 25 — and Nick likes older women! The Jo Bro, 19, recently broke up with Australian singer-songwriter Delta Goodrem, 27, whom he dated for 10 months.

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Nick looked dapper in a tux, and Ashley looked stunning in a mint-green dress (OK! did tell you mint is in for spring!).

Later in the evening, Ashley Tweeted, "Congratulations @ParisCarney @gregggarbo you were the most beautiful couple in the world tonight. #fairytale"

Aww! Sounds like she had a good time!