tˈoʊni sˈiːz ðə dˈɑːɹk sˈaɪd ʌv bˈɑːɹt ˈæftɚ hiː bɪɡˈɪnz tə kɹˈɪɾɪsˌaɪz ænd bɪkˌʌm pəzˈɛsɪv ʌv hɜː, ænd ðə ɹᵻlˈeɪʃənʃˌɪp ˈɛndz.
Toni sees the dark side of Bart after he begins to criticize and become possessive of her, and the relationship ends.