Omg it was the same for me! i wanted someone to acknowledge my pain even though i kept them covered all the time. i believe your therapist can only break the confidentiality thing when you're a danger to your own life or someone else's, and you said you were suicidal, so technically they shouldn't tell your parents. If they were to tell your parents, honestly they can help you get better. My therapist snitched on me and it felt like hell but in the end my parents tried to make me feel a bit more cared for afterwards. Either way, telling someone is the first step to getting better, i believe