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No grenades here!

Though Jersey Shore fans may have been surprised Vinny Guadagnino hooked up with his costar Angelina Pivarnick despite their fiery war of words, the reality star tells Us he has no regrets.

"I don't [regret it] at all," he told at Friday's Fashion's Night Out party at C. O. Bigelow in New York City. "It might seem like I do because you watch it on TV and people [wonder], like, 'what are you thinking?'"

Still, Guadagnino -- who sparred with Pivarnick on the Sept. 9 episode after she said he fell off the "ugly truck" -- tells Us their smush session wasn't his finest moment.

"Angelina isn't the best person to hook up with, but we were out partying and having fun," he adds of the encounter, which began with a sloppy makeout session in a taxicab in front of their castmates.

Says the star, who also famously romanced Snooki: "They aren't all going to be 9s and 10s!"