You know how it works. When the guy finally gets the girl they smooch, and usually with open mouths. I have told my children that those kind of kisses are essential, but not until they are married, and that they should not engage in such activities until then.
Easier said than done... Val was sitting at the table the other day while 6 year old Chloe was eating a peach. Chloe seemed to be greatly enjoying the sensation, with great big bites and long contact with the peach.
"What are you doing, Chloe?" says Val.
Chloe replies, "I'm kissing my wedding boy!"