Complex sentence: Scott is a suddenly single young man, who is known for rushing into relationships, invites a co-dependent seemingly "perfect couple" to share his large apartment, only to see them completely disrupt his life when they insert themselves into his new romance.
Split into simpler sentences: Scott is a suddenly single young man, who is known for rushing into relationships. He invites a co-dependent, seemingly "perfect couple" to share his large apartment, only to see them completely disrupt his life when they insert themselves into his new romance.