Credit: Photo via Twitter Photo: Nathan Fillion Gives Molly Quinn's Dog a Kiss

Over the last season of Castle we’ve grown accustomed to seeing Nathan Fillion (Richard Castle) and Stana Katic (Kate Beckett) share a smooch, but in a newly-shared picture, the leading man is puckering up to a different cutie altogether: Molly Quinn’s dog, Piper!

On June 13, Molly shared the above pic of her on-screen dad cuddling up to Piper, who was just a cute lil’ pup at the time. “@NathanFillion with Piper when I first got her three years ago. (Aw),” she wrote alongside the sweet snap.

While we're total suckers for a quality Caskett kiss, we’ve gotta admit that this encounter is pretty darn adorable too. Nathan Fillion and a puppy? Our hearts just can’t take it! If Castle had given Beckett a puppy as cute as this when he proposed then there’s no way she could say no.

Molly better make the most of her remaining vacation time with her four-legged friend, because Castle starts shooting Season 6 on July 9. Are you ready for the hiatus to end? Weigh in below!