Sexual connection is a vital aspect of most romantic relationships, but it’s not always as central as people may think. Partners have sex for self-interested reasons—it feels good and can boost self-esteem; and for relationship-focused reasons—it enhances closeness and pleases someone they love. Over the long term, most couples will face sexual challenges, as bodies change with age and individuals’ desire for sex waxes and wanes (and generally declines). Research consistently shows that most couples struggle to talk about sex honestly, but that when they do, it brings them closer together.
Love also brings people together, but it takes more than love to stay together. Many of us know couples that broke up despite believing that they were in love with each other, because of one partner’s infidelity or because of distance or circumstance. But even in long-term stable relationships, partners who feel that they are in love may grow apart, if one believes that they are not emotionally safe in the relationship, or that it lacks passion or intimacy.
Resource by: Psychology Today