Well, sure there are emotions ... just no need to where them on your sleeve I guess.
When my oldest son was in scouts, twenty years ago, I waited until my ex-husband sat down and then I sat down in the audience two rows behind my ex so that my son only had one place to look while he was on the stage. Yeah, it sucked that I could smell his cologne and see his new wife and her ring blah blah blah but the reward was that my boy wasn't nervous on stage. he had one place to look, that's all.
It dawned on my there was no battle, other than for my son's mental health and if that meant I had to suck up silently to get what I wanted (good mental healthy son) I would do it. Before my son would go on stage I would tell him, look I know you are going to do a good job beause blah blah blah and when you are done it is alright to go over by your dad and get his congratulastions, I can wait. So my son went over to his dad first, but I always got the

and the big smile while he came off the stage.
Life for me was too short to let a kid know that there was "emotions" and yes, this was after a two and a half year custody battle where he attempted to bleed me dry financially. It sucked. But I did it for my son.