How do you love

I’m not a sappy girly girl in a relationship. I don’t need nor want to spend every second with my boyfriend. I’m not sympathetic to their feelings. I got into my first relationship at 16 and we dated until I was 18. We would constantly fight with eachother. I want to know how to be better in a relationship and how to keep a relationship happy and healthy. I don’t know what it means to actually be in a committed relationship. I want to be happy and in love with someone ❤️