@BowsacNoodle @AnimeTradCath Mine did all the time, even conspicuously would start making out while telling us "be grateful this is what made you" or "hey when you have a beautiful wife you'll wanna smooch her too"
You'll always be grossed out by the parents. IDK though, I've done relationships both ways (slightly rebelling against that hands-on stuff in front of others as 'unclassy' for a time) and it works best