Why has Hollywood taught people to fight for relationships no matter what?

The cold hard truth of the matter is that sometimes you shouldn't fight, you should run. People project what they want from a relationship onto their partners, and get caught up in a fantasy that they are in a dream relationship, either that or they think they can mould the other person into what they want over time when this is unfair and unrealistic.

No matter how many good memories you have with this person, or you expect you'll have in the future, you will know deep down when to let go. Don't ignore that feeling