It all started when I found out he was masturbating to other girls that he knows from our class. Especially my friends. At first I was kinda mad and I told him to never do it again because it made me super jealous, but then one day while he was fucking me I was super horny and I just decided I want to make him cum really hard.

I told him to imagine that I was my best friend (who was the main girl he got off to). Just saying her name made him instantly horny as fuck. I then told him to imagine I was her and to show me how he would fuck her, he then proceeded to give me the hardest fucking I have ever had in my life and filled my pussy with his cum.

From that point on we did this all the time, different girls, getting him to look at pictures of them while he fucks me, sucking him off while he looks at them, sucking his balls while he jerks off to them, getting him to tell me how much better they are then me etc. Though he had always wanted to imagine fucking one of my friends and made that very clear, after months of protesting against it and coming to a conclusion it would never happen.

I again decided to randomly surprise him, one night when we were having sex I asked him who do you want to imagine tonight, after a moment of silence I figured that ment he wanted to cum to my friend but didn't want to say that, so I said "Do you want to cum to jess?" and he started pumping his cock into me so hard and fast and then proceeded to tell me how much he wants to fuck her how he imagines her in different positions, I encouraged it and he came so hard, ever since then I have been a sucker for it, it turns me on so much talking to her, knowing she has no idea my boyfriend pretends to fuck her all the time.