There are two versions to this film and it is for good reason.
There's the theatrical version, with the expected "lovers reunite" ending and then there's the director's cut that has the original book given ending. If you do not want your heart to be ripped out of your chest in anger and hurt, DO NOT WATCH THE DIRECTOR'S CUT! I mean it, don't do. Now, the theatrical one is completely fine. It is a good movie for the whole family, with only two sex scenes, one when they are young and first in love and one when they are reunited almost at the end. Hardly any cursing, just a few Sh*T's and F*cks, but overall great dialogue, great realistic depiction of what it is like to be from the "gutter" and what it entails, and how they are treated by those swimming in privilege.