Sarah Jones*, 27, lives in London with her husband Jake, 33.
She says, “When I was 15, I developed a crush on my school science teacher. He always gave me special treatment, and was particularly warm, friendly and helpful towards me.
“When I was 16, I bumped into him while I was in the pub. He gave me his phone number and we started texting.
“Then, one day, he led me into his office attached to the classroom, saying I needed to help him get something, and he kissed me.
“I was shocked but I felt special. Things progressed in the next two months to oral sex in his office and then full sex. And then he dumped me, saying what we were doing was wrong.
“I felt used and…