Definitely take space to process how you feel.
There are no wrong feelings here.
You are entitled to feel as you do.
These people have sullied the event by their ugliness.
Do you really want to be a part of such a family?
Will it be similar for christenings, family gatherings, going forward?
Probably, as an ugly precedent has been set.
I think this is a sore that could become a scab that is picked on a periodic basis.
Is that really what you want for your future?
So take your time to process how you feel and think about how the decisions made for today, set a precedent for your future together.
You deserve so much better than to be treated as someone's shabby side piece.
Whilst he was put in a difficult position, he has still allowed it to happen for the whole day which I believe is poor.
We teach people how to treat us so you need to reflect on what your acceptance of this will be telling him for the future.
You deserve so much better than this.