This movie had huge potential, but unfortunately fell short steeply and often. Some was too fictional, some was too disturbing.
Zooming in on one thing, either a relationship is going to work or it's not. If a big decision is made that it won't, then that shouldn't just suddenly change later. This one falls into both categories: it comes across as fictional, but if it really does happen, then it's disturbing that such a major decision wasn't thought out well before it was reversed.
A person who is well seasoned regarding relationships should know to take red flags seriously (letting them go often backfires miserably), but even a relationship novice should know that once a red flag is spotted and addressed, not to reverse the decision lightly.