She found a suspicious fingernail that leads her to believe that he belongs to the streets- does he?!

I get home last night and find this on my back patio. Let me just say this is the second time I found random female fingernails laying around my house. My boyfriend soon to be ex says he has no idea how it got here. It looks to me like his side piece is purposely leaving breadcrumbs behind. Does he belong to the streets?