Halsey and Evan Peters made their relationship Instagram official.

The singer and actor, who sparked romance rumors last month when they were spotted holding hands during what appeared to be a date at Six Flags, confirmed they're very much Hollywood's newest couple.

Though they kept a pretty low-profile in recent weeks, they celebrated Halloween together all weekend. First, the two made their Instagram debut as a couple on Friday (October 25). "resident goths," Halsey captioned the shot that sees her dressed up as Marilyn Mason and Peters wearing terrifying face paint.

The American Horror Story star even has his arm wrapped around his new girlfriend.

Then, on Saturday (October 26), the pair also coupled up when they hit the red carpet dressed as Sonny and Cher for FX's AHS 100th Episode Celebration. Halsey wore an off-the-shoulder silk gown covered in polka dots, a long black wig and '60s-inspired makeup, while Peters also went all out for his costume and rocked a matching polka dot shirt, all-white suit and Sonny's signature shaggy black hair and mustache.

Matt Winkelmeyer, Getty Images
Matt Winkelmeyer, Getty Images
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It sure looks like Halsey and Peters are enjoying their time together. Back when the romance rumors first started, sources told E! News they were "just hanging out" and open to seeing where things go.

"Halsey has always been a huge fan of Evan's," an insider said at the time. "A friend connected them and they had also been chatting over social media before deciding to hang out. It's still very new, but they are both interested in dating each other and hanging out."

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