Scenario
A question I"ve forever struggled with: you've got a long-term, intimate relationship. you're hopelessly in love and assume this is the person with whom you may spend the remainder of your life. They cheat on you. Would you rather or not it's a random hookup or an emotional connection that they had with another person?
If it"s a one-night stand sort of issue, they price your relationship so very little that they"d throw it away only for one sexual encounter with another person.
If it's "someone else" you are"t good enough.
My Thoughts
In this situation, i'd rather be cheated on by somebody whom my partner cared about. A random hook up implies they do not value the connection with me.
On the opposite hand, if they fell for somebody else, people can not help how they feel (though they'll avoid fostering certain relationships, i do not assume that is imperative when you are young/unmarried).
I wouldn't assume that I wasn't "good enough" if somebody cheated on me or fell in love with another person. There are such a large amount of reasons people's feelings evolve, and value is subjective.
I've had enough life experience to understand that our value isn't determined by one other person's perspective, which is subject to any given variety of variables that are external to who we are.