Justin Bieber Gets Shirtless & Romantic with Selena Gomez on Vacation!

Justin Bieber gives girlfriend Selena Gomez a peak at his phone in an adorable new picture of the two posted to Instagram.

The on-again couple are together for a romantic vacation on the Caribbean island of St. Martin.

PHOTOS: Check out the latest pics of Justin Bieber

During their vacation, Justin posted a bunch of new selfies of himself shirtless and soaking up the sun.

A few days before that, Justin shared a picture of Selena stopping to smell a bunch of beautiful flowers.

Bigger pictures inside…