There are healthier ways to express your anger. If you are uberangry, take on martial arts or something. Do not take it out on others. You still can tell them if there is a problem, but do it diplomatically, if you wanna continue the relationship. Since you are still with your T, I suspect that your anger and hatered was not really "reasonable" and well placed. It's something else to say eff you and walk out on person who has been hurting and you wanna sever relationship once and forever.

Human society works on the premise we don't act out of anger... at least we shouldn't. Anger is a genuine emotion, but it's often not constructive in humane communication. One needs to channel it. In healthy way. Discover what is the reason behind it. It's kinda not good to be angry all the time (or a lot of time) and let it rule you.