Every morning on my way to work I have to pass the local Planned Parenthood. A couple weeks ago I saw they had a new banner hanging outside proclaiming the message "Love Carefully."
I hate to burst your bubble Planned Parenthood but that's not possible.
The nature of love is a complete gift of self. To love is to give yourself entirely to another person, to abandon yourself for the good of another. To love is to forsake your desires in favor of your beloved's. To sacrifice. To make yourself completely vulnerable to another in order to lift them up. That's why the image of love is the cross.
Love is radical. "It bears all things, believes all things, hopes all things, endures all things." Love is a total abandonment of self, to the point that you would give your life for the beloved. There is nothing careful about love.
Don't love carefully. Love radically.