updated 10/01/2010 AT 6:00 PM ET
•originally published 10/03/2010 AT 8:00 AM ET
Joe Jonas and Ashley Greene have been keeping their romance on the down-low for the last couple of months. But the duo, who were recently spotted on a Disneyland date and holding hands at a Walgreens, aren’t hiding their relationship any longer.
“[Joe] is head over heels for [Ashley],” a source tells PEOPLE. “He thinks she is down-to-earth and absolutely beautiful. He hasn’t been this into a girl in a long time.”
The two haven’t been dating long, but they’re getting more serious: A source says Greene, 23, recently took Jonas home with her to meet the parents in Florida.
While Jonas, 21, and his Twilight star sweetheart lead busy lives, a source says that while the couple has a momentary break from work, “They want to spend as much time together as possible.”
A rep for Jonas had no comment.