Expressing your affection florally doesn't have to be boring.
Buy your love a pair of floral Doc Martens.
My college boyfriend once bought me flower-patterned shoes for Valentine's Day and I didn't stop wearing them until the soles parted company from the bodies. Available here (check eBay for cheaper options).
Source: etsy.com
Or a flower cap.
Buy it here.
Source: flatspot.com
Bake these delicious pumpkin cupcakes.
Directions here.
Source: smittenkitchen.com
Make flower-shaped cookies.
Buy the cookie cutter here.
Source: etsy.com