This is an ethical question which no one can really answer. It's obviously a trick question, which can sometimes confuse others. But for me, this is such an easy question. . Once you think about all the possibilities that can happen, the answer that you're looking for will suddenly appear in front of you.
If I were to answer this question, I would rather love and never be loved. Yeah, it can be VERY depressing. And it will hurt to see the person you love loving someone else. But you'll get use to it somehow. If I were to love someone, that's my choice. No one forced me to fall for that person.
But if someone loved me, I wouldn't know what to do. Of course, I would tell him that I cannot love him. And that will definitely hurt the person. I would hate to see someone hurt BECAUSE of me. Who know what that person will do when he hears that from me? Worst comes to worst, some people would even think about killing themselves. I cannot carry the memory of someone killing themselves because of the fact that I cannot love that him. Just the thought itself will make me hurt even more. More importantly, I would blame myself for EVERYTHING.