Kaley Cuoco, Costar Johnny Galecki are Friendliest Exes Ever, Bite Each Others’ Necks: Photo

The two dated from 2007 to 2009
Kaley Cuoco and ex-boyfriend Johnny Galecki enjoyed a night out in L.A. together on Saturday, Nov. 7, and The Big Bang Theory star shared a snap of himself biting her neck  Jeff Kravitz/FilmMagic

Saturday night’s alright for biting? Johnny Galecki shared a snap on Instagram of his night out with ex-girlfriend (and TV love interest) Kaley Cuoco in L.A. on Saturday, Nov. 7 — and it showed him playfully biting her neck!

“Hilarious night out in the LA arts district w/ @normancook #BFFsbite,” The Big Bang Theory actor, 40, captioned the pic.

The real-life exes — who play newlyweds Penny and Leonard on the hit CBS sitcom — celebrated the launch of Fallout 4, a highly anticipated video game.

Hilarious night out in the LA Arts District w/ @normancook #BFFsbite @ludwig1965 @bricuoco

A photo posted by Johnny Galecki (@sanctionedjohnnygalecki) on Nov 6, 2015 at 11:45am PST

And the blonde beauty, 29, is making sure that fans know they are just friends.

“So sorry to disappoint, but no secret flings going on here,” she captioned a pic of the two of them last month on Instagram. “Me and @sanctionedjohnnygalecki are just the best of buds — Leonard and Penny will just have to suffice!”

The newly single Cuoco — who split from her husband, Ryan Sweeting, in September — dated Galecki from 2007 to 2009.

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