Beyond his epic drumming skills, 5 Seconds of Summer's Ashton Irwin is also known for one other thing: his adorable, dimple-laden smile. In honor of the 5SOS guy's 21st birthday, we are appreciating one of his best qualities. His grin is so powerful, it literally melts our hearts. Can you resist matching his smile when he looks like this?!

Click through to see GIFs of his smile that will, no lie, melt your heart, and let us know which one was your fave in the comments!