Valentine’s Day stress HELP!!

Okay so on school we have this thing, you can put money (€2) in a box and write the name of your lover on a piece op paper. The school will buy for each €2 you pay, one rose and give it anonymously to your lover on Valentine’s Day. Now I forgot to buy him a rose, but he has probably bought it for me...

Do you girls have any idea how I can surprise him with something lovely, so it won’t look like I forgot him????

Ps. He has the first hour class (math) and I have the first hour off, maybe that can bring up ideas?