I remember visiting this website once...
It was called Tangled Valentine Cards - Disney Family
Here's some stuff I remembered seeing:
Print these cards and fill them out in the comfort of your own tower. When you escape on Valentine’s Day, embark on a journey with Rapunzel and Flynn to spread the love across the land to those who fill your life with fun and excitement!
Print the page on regular paper or cardstock. Cut the cards out, fill in the information, and give them to classmates, friends, and loved ones.
Tagged as: Printables, Rapunzel (Tangled), Tangled (2010), Valentine\'s Day, Valentine\'s Day Cards, Valentine\'s Day Printables