Summary: someone who likes me more than I like him, wants to date me; but I'm afraid if I let it happen, it may hurt him.
Details: My background is such that I have been in his situation before, and I let it get too deep and was then unable to pull out when I needed to. I do not want that to happen to him - I don't know that it will, but I'm extra cautious about my effects on others b/c I've been in his shoes before.
Anyway, should I date him, or should I leave this? On one hand, I'm afraid that if we spend more time together, he might become more attached than me; on the other hand, he is in distress right now because he is lonely, and I may bring some good time to him. He is still young and has much to learn, maybe this experience will not only fulfill his short-term desire, but also teach him some valuable lessons without going through a lot of pain (I feel that you learn best with experience). If I don't date him, then who knows how much longer he will be alone, and what effect that will have on him.
I already told him that I cannot promise anything, and that he should keep his eyes open for other possibilities. I even made him promise me he will do that. With that, what I need to decide now is should I date him.
WHAT SHOULD I DO? WHAT WOULD YOU DO?