ego prevents you from taking your partners opinion or feelings into account when making decisions, for fear of being controlled
ego prevents you from being contrite and sincerely apologizing when you clearly fukked up
ego prevents you from holding yourself accountable
ego prevents you from hearing your partner's feedback, causing you to frame it as criticism or condescension
ego prevents you from falling back and letting your partner take the lead sometimes
ego prevents you from appreciating what you have, and makes you feel like you can do or deserve better
ego prevents you from staying faithful, because instead of being satisfied with your partner, you need validation from somebody else to feel important
Ego is absolutely the #1 killer of relationships