Credit: Kevin Winter/Getty Image and Josephine Santos/ Photo: Jesse McCartney: Then and Now

Jesse McCartney first wormed his way into our tween hearts back in 1999 when he became part of the boy band, Dream Street. And while the band was short-lived, Jesse stayed in our hearts (and on our TV screens) thanks to parts on Summerland and, later, Greek.

Now 25, Jesse has ditched his long, blond locks for a darker, more sophisticated ‘do — though he still has that boyish face!

Jesse currently plays Pvt. Tim Truman on the seventh season of Army Wives and is even hosting a #DearJesse Twitter Party on Sunday, April 7, during the East Coast broadcast of the show from 9 to 10 p.m. ET. If you have a question or message for Jesse, just put it in a tweet with the #DearJesse hashtag.

Jesse, your smile (and beautiful soul!) still make us melt!