Hi, I'm a 25yo girl. I always had a fantasy of having sex with 3-4 men at the same time. December - last year, I had it for the first time, without telling my boyfriend. And till now, I have done it more than ten-fifteen times. But the problem is now when I do it with my bf, I do not feel anything. How to fix it? I do not want to tell him the truth. And I'm unable to give upon that gangbang habit. I have been through HIV n other tests and results r negative.