AceShowbiz - Charlie Puth won't let anything stop him from making music. When sitting down with Interview Magazine, the singer revealed that he wrote the song "Marks on Your Neck" while he was having sex.

"I wrote the song in the middle of the act, maybe I should have focused on the act a little bit more," the 31-year-old told the outlet. "But the melody just kind of popped into my head and I actually had stopped and recorded a little quick voice note and then had to get back into the act. But that's where that melody came from."

"I was getting over somebody and what better way [to do that] than meet new people? It probably wasn't going to work out with this person and that was what I was energetically picking up, which is okay," the "See You Again" hitmaker added. "It's all about the experience. And I remember waking up and looking at myself in the mirror, noticing these marks on my neck, and every day they'd heal and fade but so would the person who put them on me. And we went our separate ways."

Despite the failed romance, Charlie said he's "thankful for the experience." He then noted, "And maybe they are as well but I just thought it was interesting that a person can fade away at the same pace of the scars on your neck."