Excellent conclusion to this, even if you don't write another part. I tend to enjoy stories where the reader can impart their own form of ending (I choose to believe they end up together) but even the show had to take a few years for that to happen, so it's OK that they didn't just fall into each other's arms. I love Lois' determination and Clark's heartbreak at not being able to 'fix' everyone. Beautiful story...good job!
