Cody Simpson -- Over Gigi Hadid ... 'Single Life is Pretty Sweet' (VIDEO)

Cody Simpson isn't crying his baby blues out over his split from supermodel Gigi Hadid.

Our photog caught the Aussie pop singer with a gang of pals – hot, young females included -- in Hollywood Wednesday night and asked about his new-found freedom ... and Simpson didn't exactly say it sucks.

On the flipside, Hadid’s been spotted having a good time on rich guys' yachts in the Mediterranean ...so the feeling must be mutual.