Is it common for most men to forget how angry they were with a woman?

I just need to understand how common it is for men who keeps proclaiming love towards a woman and is easily turned on by seeing her, to forget that he is angry with her. Yet, once he sees her after a couple days, he acts as though everything is fine between them.
His explanation as to why he is no longer angry is that his “anger went away once he saw her”.

I also want to know; is the longer a guy stays mad at a girl and ignores her, any evidence that he had strong feelings for her?

Thank you.