Wilmer Valderrama & Mandy Moore Reunite for Frights at Halloween Horror Nights

Wilmer Valderrama and Mandy Moore used to be boo'd up, but now they just get their boos as friends during their annual trip to Universal Studios.

The two celebs shared video of their yearly tradition, a night of spooky fun at Universal Studios famed Halloween Horror Nights. Both the "This Is Us" star and the "NCIS" star dated over 16 years ago, in fact, Wilmer was actually Moore's first real boyfriend when she was 15-years-old.

They've since moved on romantically, but make sure to meet up every year for the Halloween tradition. In their videos, Moore admits she is terrified, while Wilmer looks pumped to "Take the horror in Halloween Horror Nights."

Moore, who is engaged to Taylor Goldsmith, was also dodging chainsaw wielding psychos before the two entered their first scary maze.

Wilmer is apparently on good terms with many of his exes, as he has been a big source of support for Demi Lovato while she continues rehab following her overdose in July.