Relationships between people aren't static things. They wax and wane, they have good days and bad days sometimes due to factors entirely outside of either person's control. That's why I almost never kiss people hello.
The next time you see someone, they may hate you, love you, not want to kiss you or just have eaten an egg salad sandwich. You don't know. But the presumption that you do, the confidence that how things were on Monday is how they are on Wednesday, just doesn't correspond to how life works.
By kissing someone when you see them, you're embracing the past and, worse yet, resting on your laurels. Sure, I made a makeout happen before, so I don't need to work to make one again, is the thought process behind such a kiss. But I believe that every kiss is worth working for, and the fun involved in rekindling that spark makes it much more worthwhile.
So start out slow, even when you see someone you're dating. Shake hands. Hug. It's worth the wait.
The Panel: Bryce, Vicky