Different people will label various behaviors as infidelity.Some would say that kissing someone other than their partner, spending money on someone else, flirting on social media, flirting on dating apps, going on a trip with another person, or going on a date is as much infidelity as having sex with that person.
A one-night stand or a long-term dalliance constitutes infidelity without question. In each relationship, the couple will have their boundaries and what they each consider infidelity. When that line is crossed, whether it’s holding someone else’s hand in a romantic setting or sending racy texts, that is infidelity.