121 Things to Do Instead of Spending Money--cute list, this is a good idea for this summer :) Save Money, Saving Money, Budgeting
How to create "A Year of Dates" Gift - Perfect present idea for a birthday, anniversary, or Valentine's Day. Also just a great list of ideas should you ever need help planning a fun date night.
I love the little playing card books. Could totally do this even with a smaller deck. 52 Things I Love About You Book (made with playing cards) - DIY Valentines Day Projects
If your relationship is stuck in a rut and could do with some scientifically-backed tips and tricks, then you need to do this relationship challenge.