I fell first and I fell harder too

Someone ask me what would I choose, "Loving someone I can't have or having someone I can't love?" And I chose the latter. Why? Because that's the safest thing to do in order to protect my heart from any kind of pain. Maybe it sounds selfish to others but for me it isn't, 'cause I know someday I will be able to love him back. And I am truly amaze of how someone chooses to love the person they can't have, but it's kinda stupid too, knowing that there's no certainty that they'll love them back.