The Mystery Continues

My workday is almost over so I decided to ask the do-gooder who gave us the roses. She doesn't know! She called her boyfriend thinking he did it (not realizing that I'd also gotten one). Not only did he not do it, he was annoyed that someone gave her one. So far, I've only seen the two roses. No one at lunch talked about having received one. It is especially odd since the other lady in our department didn't get one.

The cleaning people? I'm all confuzzled.