Persistent feelings need to be expressed. However, they need to be expressed close to the time that they occur, so the topic can be recalled by both partners. Gunnysacking is definitely not recommended. It is much better if only one problem is discussed at a time. Then the woman can either confirm his feedback or correct it.
Some people are afraid to get angry.
However, constructive and destructive arguments are not distinguished by whether anger is expressed. Like all other feelings, anger is a legitimate emotion. Especially among loving couples, arguments are more constructive, if they are aimed at resolving shared differences rather than establishing who is right or wrong. Like any new skill, effective communication takes time to develop. Expect to make some mistakes.