1. Get your book geek on.
2. Go stargazing.
3. Create a love notes jar.
4. Build a blanket fort.
5. Watch the sunset.
6. Make an at-home cinema.
7. Play boardgames.
8. Find a free exhibition.
9. Have an indoors picnic.
10. Spend the night gaming.
11. Take a picturesque stroll.
There are so many stunning parks and country walks to be found, and they don't cost a penny. Even in a big city like London there are loads (find 17 of the best here), so you have no excuse. Map out a picturesque walk in your local area for a lovely way to spend V-Day. Bonus points if it ends in a pub.