Love, for me. I've had to deal with a few females hurting me in the past, a few times quite recently. Love is also a blinding emotion, preventing you from seeing who and what a person really is. Falling in love with someone will hurt, should that person decide to manipulate you. Love is tied with trust, really, and to truly love someone, you must trust them with your entire being, and doing so is and always will be risky.