People in a relationship don't flirt with others. If they do, it means they are unhappy and looking for something else
When we fight, one of us tries to stay calm and not make it a win-loss ego situation. It doesn't mean don't share your point of view, instead, wait for the nerves to have calmed down.
My partner would sometimes react strongly to a situation and it would catch me off guard. Over time we learnt to talk about it once things calmed down and it helped me better understand her triggers and how i can avoid them.
Before speaking with my partner about what's bothering me, I usually let him know what I hope to get from the conversation. e.g "I just want to be heard", or, "I want your inputs on something and love for us to problem solve together", etc.
Expressing Gratitude towards your partner can be a powerful antidote to stress & an easy way to instantly uplift & transform your relationship. Remember, while a lot of us might know about this but we often forget to do it.
We realised that division of household chores makes everyone better off. Over time we figured out what each one of us is good at, what we each love/hate doing, and then arranged accordingly.