— Season 6 timeline!

Luke was an FBI agent, but he was in a different Unit. He never set foot in the BAU where Spencer Reid worked, a genius in his own right. He worked chasing killers; his work was only in the field.

He has a dog named Roxy, a Labrador. He really likes her, and she kind of shares his personality: outgoing and a bit silly. Spencer has a dog named Lexy, a Borzoi. He also shares a lot of his personality; he was a quiet and shy dog.

One day, Luke was walking in the park with Roxy, and so was Spencer. When Roxy went crazy upon seeing Lexy, she started running toward him out of control. Luke tried to restrain her by pulling on her leash. It didn't work. Spencer, who was reading while walking with Lexy, is surprised by an embarrassing situation...Roxy and Lexy circle the two, trying to play, which causes their leashes to tangle the two men's legs together.