Worried my mentor teacher is gonna try to fail me

I'm currently on my teaching practicum. I'm majoring in secondary social studies and currently doing my teaching practicum at a middle school. I'm doing 8th grade and have been in the American History class. I'm 22 and my mentor teacher is a 42 year old man. He's been telling me how good I'm doing. That the students love me. He would tell me ways to improve my teaching but still have me positive feedback. Two weeks ago he asked me out on a date. I declined. I'm not going to say he sexually harassed me because he only asked me out once and took the no. But since he's done a full 180. He stopped giving me feedback. He even isn't always observing me. When I'm teaching my lesson a lot of the time he's out of the classroom. Out of nowhere today he told me "Yeah I just don't think you're ready for student teaching. Idk where you got your teaching style from but it's terrible." I'm confused. I want to cry. I asked what I'm doing wrong and what I can do better but he's not telling me. I'm scared he's going to give me awful feedback at the end and I'm going to fail.