This sounds like you could be having memories coming up from childhood sexual abuse by your uncle. If you have a T, it's important for you to discuss it with him/her. The English topic would be a very intense trigger. I've been having confusing memories about childhood abuse as well (not sexual). I don't want to believe the abuse happened and I get bad headaches when I think about it. This could be what you're going through.

Don't feel ashamed of the physical response, it's involuntary. If the sexual abuse did occur this would be a body memory of the "good" feelings. The body will react to stimulation whether we like the encounter or not. Women who are raped are horrified to report they had an orgasm during the rape.