Is she the reason he won't have sex with me

It's been nearly 3 months since me and my husband have had sex. My husband and I got call from his sister to earn him Ms. Chavez is back in town. My boyfriend had a sexual relationship with his teacher from aves 13-14. She would manipulate him because she knew about his home life. Him and his sister were in foster care and his sister got an amazing family who adopted her and he got a terrible abusive family and when he came to her about it instead if helping him she used that against him. He then just started popping pills to get through Middle school because he couldn't handle it and it was the only thing that made things easier. He was hooked on pills until he was 20. His sister knows everything. And she had someone who told her about Ms. Chavez. She said from the light Facebook stalking and asking around she's only here for 4 months to cover a teacher at an Elementary school who's on maternity leave. Since then he hasn't wanted to have sex at all and I'm just wondering do you guys think it's because of her and maybe memory's are coming back?