A startling percentage of people may not brush their teeth with proper technique. Hmm. Doesn't make you eager to go out and start kissing folks, does it?
Concern is due to the fact that fluoride is "one of the most important ingredients in toothpaste, helping to strengthen tooth enamel and prevent decay."
Yes, in 2016, some people seem to just be looking for a reason to break up, but I can't believe anyone on Earth would break up with their significant other for this reason.