How do you tell people at work you are going to do your civil registration without having them freak out ?

My fiancee and I are going to do our civil registration.

It is not a wedding at all. Totally informal. We are just going to the courthouse.

His parents are our witnesses only because we need witnesses. If we didn’t we wouldn’t even invite them.

We both agreed with our families that we are going to have a proper church wedding next year where they would all be invited.

So far I told my boss and already he is freaking out. “So you are getting married ?”, ” Are you going to wear a big dress ? ”.

He even tried to get me to say it in the board meeting infront everyone by asking will I be off soon but i just said yes and when and that it is not really a holiday.

I prefer to just break it gradually to people individually that I am close with at work and have the word spread.

Do you think I should issue a message in the office.

How would you feel if you were my colleague? Would you really care whether you heard about it before or after it took place ?

(After all legally I would be married. I just don’t want people to question me about it like it is a wedding.)