Despite the teary goodbyes, lonely nights, flight delays, and outrageous phone bills, an estimated 14 million Americans are currently in LDRs, according to the Center for the Study of Long Distance Relationships. That number includes couples of all kinds, from those who fell for each other while living on opposite coasts to those who've been married for years but decided to live apart while she takes that plum international assignment or he goes back to school. How do they do it? The simple answer is that, barring the occasional attack on a hotel clerk, long-distance relationships can work—and work well. Research suggests that they don't break up at any greater rate than traditional, geographically close ones. Plus, multiple studies have found that LDR couples' levels of relationship satisfaction, intimacy, trust, and commitment are identical to their geographically close counterparts. LDR couples might worry more about infidelity, but they don't actually cheat more.