Is love when you put yourself second all the time no matter the amount of evil?

Why is my just married daughter pushing me aside? I don’t see her that often but she has no patience with me. I’m not needy but it appears she has time for everyone else.
Should I break up with a girlfriend of two years, who is completely in love with me but has not ability to reassure me when an issue regarding my past trauma comes up? All I need is empathetic reassurance and instead she gets triggered and upset.
Looking back at your extensive work experience, what is one fundamental truth about navigating challenges that has consistently proven true for you?