Justin Bieber & Selena Gomez PDA Overdrive on "Boyfriend" video shoot

These two are really going through it-the first love saga. Everytime we get a chance to see them they are all cuddled up somewhere and thats exactly what was seen while on the video set for Justin Bieber's new single Boyfriend.

Selena couldn't keep her hands off of Justin and the same was true for him, spotted carrying her (literally) at one point around the set. While Selena isn't the leading lady in the video..word is Justin made sure to give her all of his attention in between takes.

They have a pretty mature relationship it seems for 18/19 yr olds, but hey.. they arent the average 18 or 19 yr old so...