Watch Kyle Lowry's heartbreaking pregame 'air bump' handshake with DeMar DeRozan

The longtime NBA friends and teammates were separated in the offseason when the Raptors traded DeMar DeRozan to the Spurs for Kawhi Leonard.

Kyle Lowry is still doing his pregame handshake with DeMar DeRozan — even though DeRozan is no longer with the Raptors.

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The longtime NBA friends and teammates were separated in the offseason when Toronto traded DeRozan to the Spurs for Kawhi Leonard.

Ahead of the Raptors' 116-104 win over the Cavaliers on Tuesday night, Lowry appeared to "air bump" an absent DeRozan.

The touching moment broke the hearts of NBA fans everywhere: