help remembering the movie

Hi, I'm looking for a Hollywood movie I saw about a decade ago (not entirely sure about the timing). It’s a drama about a woman who is addicted to or enjoys casual hookups. At some point, she stops and starts a relationship with a guy, but she falls back into her old habits.

I remember a specific scene where she’s at a bar, sees a guy with long hair, and then there’s a cut to them in bed. Later, the main male character finds a condom wrapper or a condom in her room. In the end, he forgives her, and they end up together.

Any idea what this movie might be?