justin-selena-bday-kissThey certainly make an adorable young couple, and on Friday night (March 2) Justin Bieber put his affection on full display while planting a smooch on girlfriend Selena Gomez’s cheek.

The PDA-packed moment was extra-special this time around, as the “Baby” hitmaker happened to be the guest of honor at a belated 18th birthday bash in Los Angeles (Justin’s actual birthday is on March 1).

The Bieber/Gomez tenderness took place just hours after Selena jetted into town via LAX Airport, as she’s been staying in St. Petersburg, Florida as of late to film her new movie “Spring Breakers” alongside Vanessa Hudgens and Ashley Benson.

While in the Sunshine State as her man officially saw in his 18th, Miss Gomez was sure to tweet her love with a message reading: “Happy birthday to my best friend in the world world!!! Have a great birthday baby!”