 Don’t tell your partner about that perfect present you almost bought.
Don’t give the same Valentine card you gave your partner last year.
Don’t buy the wrong size/brand of anything.
Don’t forget to wear clean underwear.
Don’t tell your date you forgot your wallet again.
Don’t leave your date alone with your parents, flatmates or pet.
Don’t buy your partner household appliances for Valentine’s Day.
Don’t wipe your nose on your sleeve.
Don’t give your partner an engagement ring that was meant for someone else!
Don’t club baby fur seals.