My boss is trying to sabbotage my relationship

I work with my partner, we share an office. Just recently our boss has been putting up walls and requirements to limit the time my partner and I are able to spend together. We "apparently" agreed to not take holiday at the same time. Now we can barely spend any time in the office together, because apparently there is no need for us both to be in the office at the same time. And all this has happened since he upped our hours, meaning less time at home together too. Basically what Im wanting to know is, do I tell our boss to mind his own, or because he's my boss should I just let it be and get on with my job?

When you're at work - work is your number one priority. Your partner is a "Co-Worker" not a partner. If I was your boss and you told me to "mind my own" - You would be replaced. Both you and your partner need to focus on your jobs. Sorry, but that's just the way it is.