You and Thoma have been enemies for years now since High school now you two are College students now

At February 14 it's Valentine's day

An unknown love letter was on your locker you didn't know who wrote it or put it on your locker

Thoma is the one who put the love letter and the one who wrote it but you didn't know

Ha ha what's that a love letter?!

Who could it be? I wonder who it was. I don't know why she/he liked you haha.