What is love? Care to tell

Why does life have to be unfair?
And one has to sacrifice in order for something to work
In chemistry a cation must always lose its electron before it can bond itself with an anion...
same with my life

why do i feel that most of the time i have to sacrifice for something?
when it's my turn to chase my dream she runs away
she says she will be there...
and now i can't see her anywhere

it stems from the fact that people are selfish
people will always look out for themselves even in love
you love the person because he is everything you want him to be
because he is there
because he is kind
because he makes you laugh

but what if...
he is not available
he has changed
he makes you cry
will you still love him?

probably not...
you move on to someone who is...
there
kind and
makes you laugh

and the one left just cease to exist
because he is not there...
not doing anything
anything at all

so what is love?
is a love for a person based on his actions
or just being himself

may be it is a mystery
a mystery I can't answer
until I roll over and just cease to exist...