I found a new job recently and I haven't got any vacation yet that I can take.
I talked to my boss already to take some vacation at the end of the month for a very good reason -to pass my Master's degree exams-.
However next week I found out that my partner has an extremely important medical meeting with a doctor and doesn't want to go alone.
I would like to ask to take the afternoon but don't know how to tell my boss about the reason without revealing my sexual orientation or lying.
Is there any way to go about this?