While the 39-year-old NCIS actor surprised fans with a live stream on Instagram over the weekend, his ex-girlfriend upped the shock factor when she joined him for the stream, and the two chatted like longtime besties.
"You look awesome, girl!" Valderrama gushed to the 26-year-old pop star, who returned the compliment with a laugh.
The friendly energy between these exes was absolutely palpable as Valderrama jokingly serenaded her with a rendition of the Baja Men's "Who Let the Dogs Out," and encouraged her to hit him up after he's wrapped production.
Demi Lovato looked healthy and happy on Instagram Live with Wilmer Valderrama who gushed over her: