Why You Might Feel Sad After Being Intimate
You suddenly feel disconnected
You may simply feel sad because you love this person so much. During sex, you are technically as connected as you could ever be. When you really love someone and physically connect like that, you could feel an intense surge of happy chemicals in your brain. After sex, those chemicals die off and it can feel like you’re coming down from an incredible high. This is called post-coital dysphoria.