Europeans are unsurprisingly the worst offenders, accounting for nine out of the top 10 countries. But neither Italy (no. 4), known for Silvio "Bunga Bunga" Berlusconi, nor France (no. 5), where cheating is practically a requirement for election as president, secured the top spot.
Before you pack up for Thailand, or basically anywhere in Europe, check out the 10 worst places to be in a monogamous relationship below.
Chloe Pantazi is an editorial assistant on Thrillist's travel team. Yes, that's a British accent. No, she doesn't watch Doctor Who. Follow her on Twitter at @ChloePantazi.