Inside Ashlee Simpson and Vincent Piazza’s Valentine’s Day Date (PHOTOS)

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Love was in the air as Ashlee Simpson and Vincent Piazza stepped out Tuesday night for a late-night Valentine’s Day date. The couple were lovey-dovey, kissing and holding hands as they arrived at the Dream Hotel on Tuesday evening. Ashlee and her Boardwalk Empire beau headed into the “Fashion: Take Note Studio” / Samsung Galaxy Note launch event, where they caught a performance from Band of Horses — and could barely keep their hands off one another.

“Ashlee was sitting on his lap the whole night, giggling at everything Vincent was whispering into her ear,” an onlooker tells Celebuzz. “At one point, they were full on making out and didn’t seem to mind that everyone was watching.”

Ashlee and Vincent haven’t been shy about their relationship and made their first official red carpet outing at Boardwalk Empire premiere in NYC back in September. Rumors began to swirl that the two had gotten together after they were spotted in NYC canoodling back in June.

Ashlee filed for divorce from Pete Wentz last February. The musicians dissolved their marriage on Nov. 22, according to court documents.

They have maintained a friendly post-divorce friendship and have been spotted spending time together with their son, Bronx.