Have you ever meet someone who does not click with you at all? You know him/her for years. It does not matter how much effort you put into having a conversation with him/her, it does not get anywhere.
Have you ever meet someone who wants to be your friend but you are not connected with him/her? In the end, the friendship has led to nowhere.
Have you ever meet someone who wants to be your lover but in the end it turns out to be a disaster?
Have you ever meet a group of people in a sports club or work place whom you do not click at all? It does not matter how much effort you put in getting to know the group, it does not fit you.
Your life is like a jigsaw puzzle. If a piece of jigsaw does not fit, don’t force it to fit. If something is meant to be, it will come together naturally. There will be someone out there who fits perfectly well on your jigsaw puzzle. Those are the ones who bring out the best in you, respect you and accept you for who you are.