DASD-473 My girlfriend was taken by my neighbor. The sudden change in my once-friendly neighbor. Tsubasa Hachino

My first time living alone. There was a very kind older man next door. But after I got a boyfriend, his attitude suddenly became cold. One day, after a long time, he came to me and said he wanted help learning how to use a computer. I was so happy that I went to his place right away. While I was explaining things, I suddenly started feeling unwell and asked to lie down for a bit. Then the man suddenly changed his behavior and took inappropriate photos of me. What should I do? (One mistake led to a troubling situation with the neighbor.)