Till Defriending Do Us Part

DO: Tell your partner if you're friends with the person who took your virginity

Many of us are friends with exes. There's nothing wrong with that. We're all adults, and it's a lot of fun to touch base with people from our past and show them how much better-looking our kids are than theirs. However, it's always a good idea to let your spouse know that among your Facebook friends are people who have seen a lot more than your face. And it may be a good idea for you to know that being friends with old flames can be akin to playing with fire. "When you connect with someone with whom you've had emotional or physical contact in your past, there's a flood of chemicals," says Jason Krafsky. "The brain recalls the first kiss, or the intimacy, and unfortunately, it does not always remember how annoying that person used to be."

DON'T: Overreact or read too much into someone simply being friendly

Even though we should have zero tolerance for propositioners, we shouldn't be so on guard that we interpret an ex asking, "Watcha been doing?" as an offer of something more. If somebody writes to you on Facebook through direct message, with the chat feature or even on your wall, they may just be casually connecting with you, says Spira. "Don't read too much into it; it's still just a two-dimensional message." So, if someone is asking when you might be coming back to town, don't immediately assume they want to lure you into starting a second family. They might just want you to join Farmville.

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