I'm not a confrontational person, but when something's wrong I like to say it, have it out and move on. I don't think I'm aggressive, but I will raise my voice when frustrated.
DP (of only a year) really hates any sort of confrontation and his instinct is to walk away as soon as someone's upset with him. In his head it's not "it's all over", it's removing himself from a situation he finds uncomfortable, fully intending to resolve it when things are less fraught (or maybe hoping it will blow over)
I hate that. I want it dealt with "now" and him walking away frightens me. I'm scared he won't come back and worried that he doesn't want to resolve things. I'm also possibly scarred by something in my upbringing (which until recently I always saw as perfectly sensible) whereby my mother was always very hot that you must "make up" before leaving, in case "something" happened and that's the last time you see someone. So, never ever go to sleep on an argument or walk out in a huff.
Is DP right, it's best to walk away and deal with it later, or is he really thinking by walking away he can get away without dealing with it at all, in which case the "issue" will keep coming up?