Selena Gomez & Justin Bieber Working Their Relationship To The Core

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Selena Gomez and Justin Bieber were hot and sweaty for each other yesterday afternoon, but it was likely only because of the pilates class they just left.

Fresh off a New Year's trip to Cabo San Lucas, the back-on couple looked like they needed some water leaving their West Hollywood hot pilates class after an intense workout.

They've been enjoying a much healthier and active lifestyle since getting back together a couple of months ago. Selena's often on the sidelines watching Bieber's hockey games, but in all they are back and even look more in love! Happy for them?