While both partners have stable jobs and savings, the reluctance to move out indicates a deeper issue that might need to be addressed for personal peace.
People can be very understanding in situations like this, and it is crucial to exercise patience too, as they have commitments that may stop them from taking action immediately.
If that is the only issue you have here, I suggest you fall back and let him do his thing. Leon is bi, so it should not be earth-shattering when he does bi things, even if it wasn't explicitly telegraphed before.