Conventionally speaking, infidelity has always been associated with sex. However, cheating doesn't necessarily have to be all about having sex with someone else than your partner. Your better half could be cheating on you even if he or she is having an emotional affair with someone else, sans a physical relationship. When your partner is more emotionally invested in a friend than you, he or she is probably having an emotional affair. In an emotional affair, your spouse will be keen on spending more time with the 'other' girl or 'guy' than you and want to share more intimate information