End of the week again already? Fantastic. That means it's time for free-for-all Friday! Did you get any Valentine's cards? Did you send any? Did you fall in love with maths? Of course you did. Tell me about it here... or ask anything that's on your mind.

There's even a chance of mathematical dating advice, but follow it at your own risk.

## Colin

Colin is a Weymouth maths tutor, author of several Maths For Dummies books and A-level maths guides. He started Flying Colours Maths in 2008.
He lives with an espresso pot and nothing to prove.