Irene Levine, professor of psychiatry at New York University's School of Medicine and author of "Best Friends Forever: Surviving a Breakup with Your Best Friend," warns not to blame social media for relationship problems.
"It's easy to say that social networking damages relationships but that's an over-generalization," she says. "Infidelity, acting-out behavior, hyper-sexuality and mistrust are the villains, not social networks."
To avoid social-network-related fights, Levine advises, "Don't ignore your partner when you're celebrating your anniversary by tweeting during dinner. Don't say anything about your spouse on Facebook or Twitter that you wouldn't want his or her boss, mother, best friend, or him or her to see."
Last, unless you have concrete reasons to believe your partner is lying to you, you should trust him or her.