Tyler Blackburn is well-known for playing Caleb Rivers on Pretty Little Liars, but nowadays, he's heating things up on Roswell, New Mexico. While his character Alex has certainly caused a fan frenzy, the 32-year-old actor is just as swoon-worthy off screen. When he's not filming the CW series, Tyler is jetting off to tropical getaways and showing off his glorious abs. Seriously, he has so many shirtless selfies, we're convinced he lives without a shirt about 80 percent of the time. Not that we're complaining! Grab a glass of water as you scroll through his hottest snaps ahead.