husband likes dirty talk...🙊

So my husband and I have. Pretty open relationship we talk about our likes and dislikes and enjoy trying new things. Well a few years ago I told him how I had always wanted to try being with a girl possibly (it's never happened) and ever since then it's like I can't get him to finish during sex without talking about messing around with another girl and whatnot.. he's also open to the idea of me doing a threesome with him and another guy and if I'm not talking about the girl thing it's about fucking another guy.... I feel like I've created a monster lol
I feel as if I can't get him to finish without discussing these other things or him talking about it during the deed.. 
any input or advice? No judgement please....
Edit note: it used to turn me on but not so much anymore
This issue is trying to get my husband to cum without talking about these things... but it seems like I just can't....I'm just looking for advice on how to get him to cum with just me and like not the thought of these other two things...