Girlfriend wants to make it happen

So here is a bit of background.
I've been with my girlfriend for 5 years, and I've had really strong cuckold fantasies for most of the time.
One time she found my porn and cuckold websites I've visited. I could tell she was turned on but when she asked I said I used my friend's log in information, of course she knew I was full of cuckolds brownie but it was left at that.

After that it slowly progressed from passionate sex to her not wanting to kiss me when we fuck.
Then she started moving my head away from hers and telling me to shut up when I start talking trying to turn her on. This makes me think that she's thinking of someone else while we have sex, what do you all think?

I've been covering her eyes while we fuck cuz I think of her doing someone else while we have sex, and that's the only way she kisses me!! She seems to enjoy herself way more when we do this too. It's so hot!

Take her someplace romantic and really talk to her. Try to get her to tell you what she is thinking, and if she trust you enough you could open up some really hot ideas.

You should get a very realistic dildo, with popped-up veins and all, and after blindfolding her use it on her...whisper in her ear that you want her to pretend it is whoever turns her on the most that is actually fucking her at that moment...guide her handto hold the dildo and ask her to show you just how she would like him to fuck her. If it's what I suspect she will go absolutely wild with lust and will fuck herself silly with that dildo like there is no tomorrow! You will be in for a great show!! Later you can tell her it is upto her if she wants to make it happen in reality, and that you would be VERY OK with her cuckolding you, and you will love her even more for her honesty.