The Canadian PM jogged through some teens' prom photos and no-one even noticed - at first.
Brad Pitt is one, so is Ben Affleck, but the trend for newly introspective men isn't just because of divorce.
OPINION: "If you're really stupid, you're too stupid to know how stupid you are."
COMMENT: "Men were strange; somehow exotic."
Even royals aren't spared the awkwardness of bumping into an ex at a wedding.