IW, thankfully I am 99% calm in front of my wife. The only time I get emotional is during some R talks. But those R talks are very rare.
I think it's ok to get emotional during those. In fact you would have to be emotionally dead inside if you didn't.
But it's important to maintain your dignity as much as you can, and take a moment if you feel yourself losing control. Neediness is not attractive to a WAS or someone in MLC. They cant support you right now, and that just compounds the issues for them.
It helps me to think of WAS as someone - a good friend maybe - who is fighting a terrible illness, and the only way to help them is to validate, eliminate all pressure, and let them work out their own issues.