Despite the prevalence of positive feelings, hookups can include negative outcomes, such as emotional and psychological injury, sexual violence, sexually transmitted infections and unintended pregnancy. Compounding disease risks, people who hook up are more likely to have concurrent sexual partners (Paik, 2010b).

Why does my hookup gets jealous?

According to Klapow, it is common and normal to develop feelings of jealousy when it comes to your FWB. He explains that these emotions can happen when you have a physically intimate relationship with someone. That being said, Klapow explains that jealousy is a sign you are developing romantic feelings for this person.