My best friends twin brother?

Julia had been friends with Jack since as long as she can remember. Wherever one went the other followed. They were inseparable. He had a twin brother named Paul. And even though they were twins they were completely different. Paul was more popular and into sports more(and let's not forget 10x more attractive), when Jack was more into shopping and photography. And they never got along. They always just fought about something. Julia was pretty close with Paul too even though she kinda had to because she saw him so much even though Jack was always talking about how much he despised his brother. Julia and Jack told each other everything and never once got into a fight(or at least not a horrible one that could end the friendship) but there was one thing that Julia wasn't telling Jack and had been keeping it a secret since the day they met. Julia was in love with Paul.