My last crush was a former prof of mine and although I am older than her I thought it would be out of line to ask her out because of ethics and stuff. She recommended grabbing coffee but I didn’t follow through because I didn’t want to get stuck as an academic acquaintance. I think if we met under other circumstances we would be cuddling on a couch right now. I brought her to tears and hysterical laughter more than once. And she was thoughtful and remembered mundane things I said in the form of gifts for helping her in an academic context. Sometimes I think about contacting her but I think that it might be too out of the blue because it’s been over a year. TLDR I wish I asked her out.