I Don't Understand

Why am I the one that always has to give in 1st? I have to bend. I have to apologize. Why? I can see if I was in the wrong. In that case I would be grown woman about it and apologize. But why every time someone does something to me I have to be the one to be the bigger person. I have to call. I have to email. I have to text. When will someone confess to me that they were wrong. Why when I get done dirty they just disappear instead of apologizing? But they all say the same thing 'I love you'. Whether a family member, friend, or boyfriend. I just don't get it.