Most Helpful Guy
Well... this is interesting...
I would give the call another call or two and see if you can find out more
Most Helpful Girl
I tend give trust until I am given a reason not to. If I get a guy feeling I act on it. It is naive not to.
Personally, I would give him it and say," I found this on the floor , it think this must be yours" ... that way he knows you have seen it. Then take things from there.
Don't become paranoid, just see what his reaction is when he knows you have found it. Sometimes we can make wrong assumptions, but we can only stop doubting if we are given a reasonable explanation.
Trust is important in a relationship , but it should never be given away freely.