**UPDATE** I found something in our car that I know isn't mine
Update- I asked the gf of his cousin and to my relief it was hers! That's why I didn't press the issue with DH. I didn't want him to know that it was bothering me like that. Sometimes things enter your brain and you don't know why. This was one of those things. I'm glad to know that I can fully trust him. I still don't put anything past people though. I just don't want to be naive about anyone. I love him to death!!