Opinion - Randy Cohen

A large portion of our grade for a course I am taking at a major business school is based upon group projects. One person on my team has taken an egregious free ride on the hard work of the rest of us. Most of us have already turned in our final papers, so telling the professor about this would have no practical purpose, but it might teach this guy a lesson. Rat him out? -- K.F., Oakland, Calif.

I struck up a close friendship with a man. We take longs walks or simply talk for hours. I trust that our somewhat intense relationship will remain platonic because he is married and I am in a committed long-term relationship. Yet this feels like a nonsexual affair, because we haven't told our partners about it, an omission that feels like a sort of betrayal. May we continue to see each other in this way? -- Name Withheld

My friend, a young artist at the start of his career, offered to sell me a 1 percent share in him for $9,000. I would receive a portion of his lifetime earnings but would have no say in the sort of work he did. This seems like a good deal for us both, but it does feel a bit like slavery. Is this agreement ethical? -- Patrick Hebron, Brooklyn, N.Y.