He`s just not that into you

The rule is that guys who cheat on you don`t care about you much.
Whether i am in or not?
I don`t kown.
What is "love" ?or How is "love"?
That love you maybe try hard to make you happy ,always by your side when you sad or other.
If he`s just not that into you,let him go,please.
Maybe the happy ending just moving on.
You `d never , ever gave up hope.
However,if i really like him whether i would tell him or not?
That`s the point, for me.
I have no any idea for this "loving story".
I`m the exception for who?