Every summer the same controversy arises between identifying toads and frogs. People will call a toad a frog and a frog a toad. They are very different but in some degrees the same.

Frog and Toad are not at all alike. Frog likes new adventures. Toad likes the comforts of home. Yet despite their differences, Frog and Toad are always there for each other—as best friends should be.

What makes a great love story? Maybe it’s chemistry, or devotion, or music swelling at the right moment. Or maybe it’s writing a letter just so the other person has a reason to check the mail. At ...