I kind of see where you are coming from.
In general its my boyfriend who would apologize first. He is type b and loves peace, I am type a and incredibly stubborn. Then again I have always had trouble giving in, its just not in my nature unless I do something really horrible.
For the other part of the topic, I have been dating my bf almost 4 years, and I would say during the first 2.5-3 years the intense feelings were one sided (more on his side then on mine). He always seemed that he was more in love with me than i was with him and thus he was more dependant on the relationship than I was. I would toss the idea of breaking up around anytime he did something that bothered me- and that was often as he had become lazy and complacent with his life and I couldn't handle it
After he pushed himself hard to succeed and has excelled in what he does now, I would say my feelings shifted to a place where the feelings are mutual and this imo is the most healthy state of a relationship. If you feel that you are becoming too dependant on the relationship or too needy then it is either time to have a talk with him to discuss it or to immerse yourself in other things. It is not healthy for you to worry. Everything in a relationship has to be shared and feelings must be mutual. A relationship after all is one huge compromise for both parties