Complex sentence: Julia accompanies Rachel's boyfriend Mike (Jeff McCracken) instead, borrowing a dress that Rachel had made for herself; an arrangement that Rachel should never have agreed to because Mike becomes smitten with Julia and they begin dating.
Split into simpler sentences: Julia accompanies Rachel's boyfriend Mike (Jeff McCracken) instead, borrowing a dress that Rachel had made for herself. It's an arrangement that Rachel should never have agreed to because Mike becomes smitten with Julia and they begin dating.