Seems a bit shallow to dump her because of weight (you don’t need body issues, really) and acne (which we all get), particularly if they are so very compatible.
C’mon, it wasn’t 100% the lies. Let’s face it, physical attraction has a great deal to do with romance, right??
I really like the way you attacked this challenge, but have one suggestion. It’s a little slow to start because you do more telling than showing. While I, the reader, don’t know about where they live, Julia and Ben certainly do (especially since she visited). So maybe change the beginning to show this without specifically stating it? I think that would really help.