Scientists from Stony Brook University in the USA have identified three forms of infidelity in relationships.
Besides physical infidelity, there is emotional and electronic infidelity.
Emotional cheating involves being strongly attached to someone other than your partner, Mail Online reports.
It often manifests itself through conversations, exchange of thoughts and feelings.
This type of infidelity can be no less painful outside the couple.
Electronic cheating involves flirting and exchanging sexual messages on social media.
In the absence of physical intimacy, such actions are also perceived as betrayal.
These forms of infidelity can be perceived as both harmless fun and serious betrayal.
Experts advise discussing boundaries and expectations in relationships to maintain trust.
