Negativity Bias
It's bizarre how we often negativity bias affects us. We might have a wonderful time with someone but we often remember only the smallest negative experience with them. We could have spent four hours with them but we will only remember the five minutes that might have irked us.
We also use negativity bias in other corners of our life, for example we might have owned a wonderful car that served us well for a legion but we only remember that one awful engine failure that took us a week to fix.