The reason the male lead stopped writing isn't that the woman he was basing his stories on left him and he oh-so-dramatically swore off love and writing forever, like we've all seen a million times before. No, what happened is much more interesting and unfortunately realistic than that: his editor betrayed him to the media and made a big deal of him having a person as his muse, and as he was a popular writer, the internet managed to track her down and doxx her, ruining her life for awhile. They weren't even dating. Naturally he was horrified and couldn't bring himself to write after what happened. The female lead brings him to meet the girl he used to love and talk with her about what happened, and they both walk away from it happier people with a lighter conscience. (His old love had been pretty mean to him about it at the time, but that's also rather understandable.)