They go from one relationship to the next chasing those feelings, hoping once they find the right partner, they will experience the infatuation stage for the rest of their lives. Unfortunately, that won't happen, because the infatuation stage affects our brain chemistry almost like a form of anxiety. Our bodies can't sustain that chemical condition for very long and eventually the high wears off and the honeymoon is over. If deeper forms of spiritual and brotherly love are not developed during this time, many people simply move on to another relationship. After a lifetime of chasing infatuation, it's possible to end up lonely and isolated.
Sex binds two people in a very deep and intimate manner.
But those close feelings after sex have very little to do with the agape and phileo forms of love. But loving a person this way might not be in their best interests. If our gift of love fails to promote the good in the other person, they might not like it and reject it. Other times we might expect to be loved by our partners in the same way we were loved as children by our parents. For example, if your parents made you feel loved by buying you things, you might associate loving actions only in the form of gifts, jewelry, clothes and expensive toys.