The last thing most people would want to see is their current significant other getting buddy-buddy with an ex, but Kaley Cuoco clearly isn't most people. The Big Bang Theory actress is not only costars and BFFs with Johnny Galecki, but the two dated for about two years before splitting in 2009. This hasn't stood in the way of her current relationship with equestrian Karl Cook whatsoever. In fact, Karl and Johnny seem to be pals. Kaley shared an Instagram photo of the two hugging it out while Karl visited her on set, writing, "Ummmmmm then this happened 🙈🙈 @sanctionedjohnnygalecki get off my man! 😂 @mrtankcook." Later on, Kaley got her own adorable snap with her boyfriend. It's safe to say these photos are a little less risqué than the last photo shoot that went down on The Big Bang Theory set.