The actors weren't comfortable with kissing, for whatever reason.This is particularly common with homosexual and interracial couples in older works, but now its on its way to becoming a Discredited Trope. Usually, this is done for at least one of these reasons:
The Kissing Discretion Shot is what happens when a kiss is implied, but not shown directly, usually by creative camera angles or by cutting away right before the characters' lips touch. So, after all the Unresolved Sexual Tension, Alice and Bob are finally going to kiss.wait, why is the camera looking away?
