Seeking answer regarding ex?

Hi all. I Want to ask recently I found a fake nail on my ex's car. He started laughing and took it as a joke when I asked him who's this nail is this? he said maybe the wife's nail of previous owner of the car. but I doubted because he is a car boy he always daily cleans his car. what it could be? the fake nail wasn't dirty if it was old
Seeking answer regarding ex?
Post Opinion