Karin, my daughter is a lot like me, we are all peaks and valleys, either really happy or really sad. But neither of us has a long memory for the bad stuff in general and so we tend to let things slide pretty quickly and get back to being friends.
Her BF was irritated that I called him on not cleaning up after himself when he made a late night pizza. (he said "I made a pizza last night" and I said "I know" and he said "how" and I said "because the dirty cookie sheet and pizza cutter were left out on the counter") So for the rest of the week to spite me he did the dinner dishes, with a scowl-ooo hurt me so bad (hee hee). He has always thought that I don't like him for some reason. Which is not quite true. I think he is nice enough, and a great first boyfriend for DD, but I don't see it long term.