Hicky or "pimple" UPDATE

so I wasn't crazy. I told him I posted on here and he then said he did invite someone over but he doesn't think it was a hickey but could have been. It wouldn't let me update my original post

To answer some questions we aren't in a open relationship. I thought it was a hickey, he admitted to cheating but said she didn't touch his neck. It's just a coincidence that it was there I guess. This is his first time cheating and his last time with me. Last time as in we are done and will be going to Court to figure out custody