I have problems when arguing with my partner as well, I often freeze and give in without getting my point across or saying what I want, not because his anger is abusive, or even negative, he handles his anger very well, but because I am so terrfied of anger and I don't know how to express my own constructivly.

I haven't found a real solution to this yet, I just wanted to let you know your not alone in this, and I hope you find the answers you are searching for

Best Wishes
Typo