X17 took a look at the cutest kissin' couples all year... but that's all the kisses were: Cute!

THEN we looked at the hot(?) makeout sessions between lovebirds like Tila Tequila and CourtenAY Semel, not to mention reality "stars" Heidi Montag and Spencer Pratt.

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Yuck!

But you know what's not gross? Britney giving Jayden a big smooch on the cheek:

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So adorable!