On another note, assuming the fiance doesn't do anything too crazy, I don't think he's evil. In fact, his goal is almost the same as the MC's, it's just his methods are a lot more sleazy and selfish. He's ashamed of his country bumpkin background, and also imitated those around himself to improve his image, and he wants to become more 'sophisticated' to grow, have a more enjoyable life, and more confidence - it mirror's the MC quite a bit, and it makes me hope he redeems himself (though they should still split).
...Of course he's going to go full malicious evil at some point, as is the cliche, but I can hope for a bit more depth.