You choose whom you love in this world.

What you feel won't necessary be an enough reason for your choices.

In the decision process, the heart has the say, as well as the mind.

Maybe you have loved someone so much but the only way to keep going is to leave that person behind,

not because you wanna mess up with that person's feelings 

(which you wouldn't want to do because that is not real love anyway)

but because,

it's the only right thing to do.