Credit: Instagram

It’s hard to decide which on-screen Pretty Little Liars couple takes the best off-screen pics and videos. Lucy Hale and Ian Harding are certainly in the running, and Keegan Allen and Troian Bellisario can be oh so adorable. But Ashley Benson (Hanna) and Tyler Blackburn (Caleb) might have them both beat.

Tyler just sent out this swoon-worthy tweet, which had the picture to the right with the line, “My lover.” Why do you have to do this to us, Tyler? It’s bad enough you’re leaving PLL for Ravenswood —  do you really have to remind us how adorable you and Ash are together in the meantime?

Other moments Ash and Tyler have shared with the Twittersphere: this vid of the two getting out after an early morning on the set; the pair being cute at Coachella; and Ash tagging Ty “my hunny” in this on-set pic. These two might not be dating, but they still get our vote for most adorable two-some!

Which PLL duo do you think has the best off-screen chemistry. Let us know in the comments below!

Pretty Little Liars Season 4 premieres on Tuesday, June 11, 2013 at 8 p.m. ET/PT on ABC Family.

Source: @tylerjblackburn