Hopefully you’ll be doing some kissing this Valentine’s Day. So we thought we’d help you avoid some of the pitfalls of lip-locking: Researchers point out that women say men’s biggest kissing mistake is that they’re too aggressive with their tongues. And men claim that women don’t open their mouths wide enough. For both sexes, the number one kissing complaint is lack of variety. It’s recommended you kiss different parts of your partner’s face and pay special attention to the ears and neck.

Source: The Art of Kissing, by William Cane