Pegging

About 2 years ago, just a bit before we got married I asked my then girlfriend who is 3 years older than me, if she would use her vibrator on me. She turned it on, rubbing it all over my nipples, then down to my cock and balls. I told her I wanted it lower, in me. She put her finger at my asshole and asked if I meant it down there. She moved it and then I told her to put it in me. She lubed me well, we keep lube close as we do have anal sex often, though she doesn't need too much lube anymore. She put about an inch and a half in me and I was begging her to stop. It wasn't turned on, no vibrations and I asked her to turn it on and she refused. It was much thicker than it looked. "I take it all the time, pussy and ass just to get off, you should be able to take it" she said. I asked her to go slow, and reminding me of my first time in her ass, I didn't realize how painful it could be and I pushed it all the way in on the first stroke. She proceeded to get all 8 inches up my in one stoke. I was sqeezing my ass down on the intrusion, it hurt I asked her to take it out. She wouldn't do it, again reminding me I only stopped the first time in her ass when I'd come. She turned on the vibe and wow it was much better. Soon she was fucking me with it in and out over and over. I started to grab my cock and jack off but she stopped me. "Not yet" was all she said. After about 10 minutes of getting fucked, it was much easier and she asked me if it was ok now, I told her yes. She asked if I liked it and I didn't answer. She rammed it all the way in and started moving it from side to side stretching my sphincter out, she was screaming at me asking if I liked it. I finally said yes.
"Tell me what you like bitch"
"I like you doing it to me"
with that she rammed it in to the hilt again, and started wiggling from side to side, I was in pain.
"Say it bitch, say it!"
I finally responded, knowing what she wanted and what I was honestly too embarrassed to say. "I like getting fucked by you"
"Fucked where?"
"I like getting fucked in my ass by you" I answered.

The next day she started putting some of her thicker dildoes in me, they weren't vibes. In a week she had me in an adult store and was making me answer her in a loud voice, all the pervert men there were hearing and laughing. We were talking about the big strapon cock she was making me buy, and making me say how much I liked getting buttfucked by her.

We still have great sex, we have gotten married, and I get a very hard ramming buttfuck a couple times a week. By the same token when I buttfuck her I ram it home and talk dirty to her and make her tell me how much she likes having her ass fucked.

When we have regular intercourse or oral sex, we are a normal married couple. We both enjoy each other and both participate alike. But she gets a look in her eye and I know I'm getting a rough anal fuck. This weekend we went hiking on a trail, and right there on the trail she told me to strip fully, and bend over, leaning against a boulder. She fucked me right there out in the open. Now she's saying we need to go to a nude, hedonist resort for a week in the islands.