For Mother's Day or Father's Day!
This is a perfect quote because sisters are always going to be there even when you don't want them to be and they are forever your friend that will always forever be there for you.
If you could only see that still loving her is keeping your heart from me.. And I would love you always. Regardless of your faults, of your insecurities, of your fragile and broken heart.. I will mend it all if you allow me to.. Because you are everything I've always wished to have and everything I want to be.