Letters containing poems or expressions of love, and are not known by other people except the recievers mother.
Reciever is often a girl.

Secret love letters written by a girl are often not sent, and are not known by other people except the girl's mother or/and sister(s).

Running for exercise and picking up trash you find along the way. It's good for the body, mind, soul, and environment! Started in Sweden but is making its way to the U. S.