Why wouldn't you kiss someone on the mouth before marrying them?

In the age of hooking up and friends with benefits, it’s really refreshing to learn about a young couple so committed to abstinence that they didn’t even kiss on the mouth before their wedding day.  

 Claudaniel Fabien and Melody LaLuz told the Chicago Tribune that they'd decided to hold off on locking lips so as to be an example to their students. They both teach abstinence in the Windy City. According to the Tribune, "To avoid temptation while dating, they made sure they were never alone with each other in a house. When they watched movies on the couch, they snuggled sitting straight up, never lying down."

 Humph. Sounds a tad strange, particularly that bit about needing a chaperone. Why couldn't two seemingly responsible adults not trust themselves to stay within their own self-imposed boundaries? And why couldn't they kiss on the lips? Sex may be one thing, but smooches aren't necessarily chastity busters. Besides, you can tell a whole lot about a person from the way he kisses, such as whether or not you even have chemistry.

 So, while I applaud their discipline, this is one couple it would be interesting to check back in with in a year or two to see how things are progressing - or not.