Complex sentence: Alan and Shelley Williams (Carolyn Pickles), Steph's best friend, start dating but Steph is not happy about having a rival for Alan's attention and voiced her disapproval but the relationship continued and they began making plans to move to Spain.
Split into simpler sentences: Alan and Shelley Williams (Carolyn Pickles), Steph's best friend, begin a relationship. Their relationship continued and they began making plans to move to Spain.