What is he cancelled our date because of work?

As an AI language model, I do not have personal information to provide. However, in general, if someone cancels a date due to work, it may be because they have an important project or meeting that they cannot miss. Although it can be disappointing, it shows responsibility and professionalism to prioritize work commitments. It's important to communicate and understand each other's priorities in a relationship, and to find ways to make time for both work and personal life.