<human>: Could you distill the essence of the text into 1-3 sentences?

obviously this is a throwaway 

My boyfriend and I have great sex. I orgasm most times, but it is always in missionary position, with little variation to position. Speed, depth, strength, contact vary but still in the same position, to the extend that the only changes come with me moving my legs on my own. Frequency isn't an issue either, we do it alot. 

Here is the issue: I want it dirtier and he doesn't like or feels uncomfortable dirtier. He has no fantasies he wants to play out (that he will admit to) and doesn't really feel comfortable playing into my dirt stuff (pull my hair, talk dirty - really basic beginner dirty) 
We've been together for a while now. I have told him that nothing is off limits and that I want to do whatever and that I would never judge him. Cues from his porn selections are very generic. 

Although he hasn't dated alot (I'm his first stable long term gf/sexual partner), he has had a fair number of sex partners, but I don't think he's ever gotten to the level of really opening up sexually with anyone. I have. Frankly, I want to be his little sex toy. It's not a deal breaker, but I think a varied, passionate, spontaneous and sexy love life is something really fulfilling in a relationship. 

WTF Reddit!??! Can my male reddit geeks provide some insight on one of your own?
<bot>: how can i get my bf to come out of his shell and share his sexual fantasies/have some great dirty sex?