365 reasons why I love you jar. Both have their own jar and write once a day one thing they love about the other. On their anniversary/birthday/valentine's day/christmas/whatever the occasion, open the jar and read what the other person wrote
I love the simplicity of the heels and the tattoo. I think tattoos add something unique to each person, even if it is something as simple as a heart. The heel and foot tattoo combination is cute and I love it.