Complex sentence: While shooting the music video Jude tells Shay he is her first real kiss and goes out with him until her sixteenth birthday when it is revealed that he was cheating on her with Eden Taylor the runner up of the Instant Star contest.
Split into simpler sentences: While shooting the music video Jude tells Shay he is her first real kiss. They go out until her sixteenth birthday when it is revealed that he was cheating on her with Eden Taylor, the runner up of the Instant Star contest.