Life is a personal journey.
You're entitled to do as you please with your life and do not need the approval of others. Having said that the general belief is it (healthier) to love one's self, maintain a high self-esteem, and retain some emotional independence.
Generally speaking those who don't are prone to being taken advantage of by others or may become suicidal if their mate should betray or leave them. They're less resilient after heartaches.
People who truly love themselves aren't likely to put up with much crap! They refuse to stay in abusive relationships because they believe they deserve to be treated better. They tend to lead a well balanced life which entails staying connected with friends, family, co-workers, and having their own personal interests/hobbies outside of their relationship. This provides an emotional security safety net.
Lastly some people's love is borderline obsessive or fatal attraction. These people are so completely invested in their mate that they think about or wonder what their mate is up to 24/7 which can lead to invasion of privacy such as reading their emails, checking their phones, or following them around town. In some instances they are highly jealous, suspicious, or paranoid for no reason. In other instances they are very clingy and almost smother their mate to a point where they're pushing them away. In the worst cases they might become violent if their mate dumps them. "If I can't have you then no one can have you!" or they kill themselves because they can't imagine living without their mate. They ignore the fact there are over 7 billion other people on the planet. Odds are there is more than one "soul mate" for each of us.
Nevertheless if you're happy and your mate is happy with the way you are that's all that really matters.
Know yourself, Love yourself, and Trust yourself.