Break up with friend

I’d this friend, who’s I liked the most, really liked her, i can’t even put it into words, but she left me and treated me like a nobody, for almost no reason!... after 4 years she apologized for what she did, it wasn’t an honest apology,I couldn’t say anything but, after she left me , i was heartbroken to the point that I couldn’t trust anyone, I didn’t say how much I cried, and how my heart was bleeding this entire time, even after 4 yrs, I couldn’t stop the pain... and what made the pain disappear is she tried to use me again after her apology, and i was too naive to trust her, then when I found out about her intention, I could finally let it go...