KKW was leaving the Hollywood Beauty Awards Sunday night at Avalon, where our photog asked if Consquence's 7-year-old son, Caiden, publicly courting North should be taken seriously. If ya missed it, Caiden's been putting on a full-court press ... on social media, anyway.

Caiden -- who has his own IG page -- has been posting tons of photos of himself buying gifts for North, including one where he's got her wrapped under his arm with the caption ... "Boo'd Up." They even went on a play date with her brother, Saint.

Put the emphasis on "play," based on what Kim told us about her first born and Caiden. Sorry, rom-com lovers ... those V-Day shots of the lil Casanova with a Tiffany & Co. bag are just good fun.

Kim did get serious about one thing -- her security. Check out the tension between some autograph seekers and her hired muscle.