Review of Something Borrowed

When did anyone ever say cheating wasn't wrong in this film? I'm confused as to why people defend the antagonist so much seeing as she's been an awful friend from the beginning. Did we forget that she threw a surprise party for the protagonist out of selfishness when the protagonist didn't even want it, makes everything about herself, steals the man the protagonist clearly likes because she saw the opportunity, and cheated on her fiancé multiple times. No one is saying what the protagonist and fiancé did was right, but their wrongs don't make the antagonist suddenly morally sound. Why can't people just take the film as it is? It's supposed to be more realistic and have a difficult moral compass, that's the whole point! The main character develops from lying constantly about her feelings and allowing her best friend to take everything while she waits in the background to owning up to her mistakes and finally telling the truth. I don't know how this concept was so missed by so many people. I get it if you don't like the film cause you didn't like the story, characters, or acting but the moral plot? Seriously? There have been far worse moral plots than this one, so not a viable excuse. Just more virtue signaling.