I would add you never put the relationship over your own needs or development. You should contribute to the relationship of course, but too many guys make themselves slaves to the relationship. At the end of the day, the only person you spend 24/7 with is you. So if you're not happy with you, no relationship will ever replace that. So you have to keep fearlessly developing yourself and pursuing your goals. I've always had girls feel like they're "at my heels" as I'm creating a powerful reality in my life. When they feel like they have to keep up with your progress, your drive...then they're always chasing.
Also, I've told every girl I've dated in my adult life "You will never be the most important person in my life." Even if they are number 1, which is fine, they can't be the ONLY number 1. What does that say about my family? Friends I've known for half my life? My great colleagues? Why would a girl I've been seeing for 6 months suddenly take precedence? Life is a latticework. You need a village to thrive, despite what Disney might try to tell you