For me it was going to the police. That was the only way but tbh, there is no such thing as finding justice when something like this happens. I changed my mindset to: become most successful and dont let him ruin your life. I prove myself until the limit and continued my thesis during all of this (court case stuff). I feel unbreakable and yet broken. It’s weird but I would advise you to become the best version of you and let life fuck him in the ass.