Joe Jonas [1] is certainly swoon-worthy! When the 29-year-old singer isn't making us melt with his voice [2] or showing off his cute romance with fiancée Sophie Turner [3], he's turning up the heat on social media with his shirtless [4] snaps. While he certainly doesn't post as many selfies as his younger brother Nick [5], he has shared quite a few sexy snaps over the years. Get ready to catch the love bug as you look through some of his hottest moments ahead!