Heidi Klum -- Kissy Kissy to Seal, But My Boyfriend the Boss

Heidi Klum expressed affection all over the place Saturday, with ex-hubby Seal at their children's soccer match ... and her boyfriend.

Heidi and Seal are doing great at burying the hatchet after a bitter breakup, and their kids are the winners. The whole family had lunch at Toscana in Brentwood after the match.

But Heidi's moved on ... earlier in the day she hung with BF Vito Schnabel.

Modern families.