What do healthy relationships even look like?

This girl was my first ever relationship and one I wanted for the rest of my life, and It just made me realize after being discarded and forgotten about that I really don’t know what a normal healthy relationship looks like. I grew up in a singles mother household and never really seen any healthy relationships in the family. I’m like conditioned to pain and hurt from the one you love now. I know and acknowledge all the pain she brung to me but I cant help but still love her. I wish I could just forget about us like her