Crush make you smile
Obsession make you feel suffocated
Crush are the attraction
Obsession is the madness
Crush may be for short period of time
Obsession will remain forever until you may die
Crush can motivate you for the one you are
Obsession will suffocate you for the person are
Crush has the power to motivate you
And obsession has the power to take you in the worst state of life
Crush will give you freedom
Obsession will take your all freedom
and will cage you in the emotions of possesiveness
That's the difference of crush and obsession
Crush will let you remain in peace
And
Obsession will take your every peace of life