This is the daftest question I have ever read. Yes, zen masters occasionally have wives; there were great Korean / Japanese debates about whether this sacrifice of 'celibacy' was a distortion of the meaning of Buddhism. Trust me, an actual Buddha isn't interested in having sex with you, they have other things on their mind -- tantra aside. Are you in love ...
I'm pretty sure I know the answer to this: no-one knows.
You can only read the metaphors about extinguished lamps etc. to get it.
See Collins' Nirvana: it is an excellent piece of scholarship -- from a Theravadin perspective.