There are two main reasons why we struggle to forget someone:
1) We truly believe they are the one for us.
2) We fear that we will not find anyone better.
However, we should all remember two things:
1) If someone is the right person for us, they will come back into our lives no matter how far away they drift.
2) You will always be able to find someone better—or, rather, someone just as good who won’t forget you.