Not Until You're At Least Twenty, Anyway.

Older Son (talking about kissing): ... but (boy classmate) and (girl classmate) kissed on the lips.
me (doing my best to be neutral): Oh?
Older Son: Yeah. Which was disgusting, because of germs. I will never kiss anyone on the lips.


Cue maternal relief...

Ah, l'amour.

Older Son: I’m going to marry L(a girl in his class). 
Me: Have you spoken to her about this? 
Older Son: No. 
Me: Are you going to? 
Older Son (bemused tone): No.