My girlfriend messaged me when I was at work today, said she was going over to my friend's after work. She suggested that I should ask him to come to ours instead. I asked why she couldn't suggest it herself, she said both him and I would find it hotter if I asked him. I said I didn't want to ask, she said she knew I wouldn't but told me if I wanted to watch I would have to ask. I asked her if he put her up to this. She said they'd discussed it and they both thought it would be hot for all of us. She said it was up to me, she didn't mind either way, she would prefer that I would get to watch but felt that I needed to overcome my fear with him.
The thought of asking him to come over made my stomach churn. I knew he would rub it in but it kind of turned me on that he would do that. I didn't want to offer myself up for that. I decided that she could go over to his and I tried not to dwell on it. The doubt started to set in, I worried that she might stay there longer than necessary, that they might do things I wasn't happy about. I knew it would be better all round if it was at ours. I went back and forth about what was worse, asking him or her going to his. Eventually I decided to message him to see what he would say.
Me: You're welcome to come over to ours after work instead
He didn't reply for a while. I started to regret it, I knew he was going to milk this. Then he replied.
Him: Thanks but it's fine, she seems happy enough to come to mine.
I didn't know if he was being genuine or baiting me into asking. I decided to leave it but then I started having doubts, then he messaged again.
Him: Are you saying that you'd prefer it if I came to you?
Me: I would
Him: Why is that?
I knew he would milk it. I debated not replying but I'd already admitted that I wanted it. The thought of telling him what he wanted to hear was getting me hard, I went to a toilet cubicle to finish the conversation
Me: I'd like to watch
Him: Watch what?
Me: You're a dick...

Him: You want to watch my dick?!
Me: Fuck off! You know what I mean

Him: Just tell me what you want...
I thought about it, cock in hand, took a deep breath...
Me: I want to watch you fuck [my girlfriend]
Him: Wow, that's hot and all but what are you suggesting?
He was making me beg, I was in too deep to back out and too horny
Me: Could you come over to ours after work and fuck [my girlfriend]?
Him: Fuck... I thought you'd never ask

Him: Sure, I'd love to

Me: Fuck you!
Minutes later she was messaging me, happy that I'd messaged him. I left work on time thinking I would get home before he arrived but when I got home his car was already there. I walked in, looked into the lounge to see him sat with her kneeling in front of him, sucking his dick. I sat in the other chair, she looked over at me, she hadn't taken his dick out of her mouth since I'd got home, her priorities were clear.
I took out my dick and started to stroke, I figured they would know I was doing it but I wanted to enjoy it and the arms of the chair kind of hid my hand and dick from their sight. This wasn't the first time I'd done this but it was the most comfortable I'd felt about it. I was accepting that I was enjoying being cucked, that thought alone turned me on more.
She didn't seem to tire of sucking his cock. I don't know how long they'd been at it before I got home but she seemed to enjoy it as much as he did, all 3 of us enjoying the act. Eventually she stopped sucking and climbed on top of him, holding and guiding his dick his dick into her pussy as she gradually lowered herself onto it making faces of pure pleasure. She rode his dick and leaned into him, foreheads touching and them kissing as she rode him. The coupleyness hurt but was hot to watch.
He then stood up without them separating, he held her as he fucked her. He asked me if this was what I had in mind when I'd asked him over. I said yes under my breath, fully jerking off now. I think every other time she had been fucked, I had convinced myself that I wasn't a proper cuck for one reason or another. This felt like the first time that I couldn't think that. I was openly jerking off while watching after asking him to fuck her. I thought it would feel shameful if I ever got to this point but it just felt good. I was actually missing his commentary from last time. He would give the occasional comment, telling me how good her pussy was, how tight it felt for him but he was much less verbal than last time.
He put her down while she was cumming then had her on her back on the sofa. He had her feet in his view but wasn't giving them as much attention as he usually would. I assume having been at work all day, her feet weren't exactly shower fresh to his liking?

He fucked her some more, had her beg for his cum and unloaded inside her. I managed not to cum. He got dressed and said something about just asking if we needed him again

and then he left.
She told me to lay on the floor, I reluctantly did as she asked, I knew what was coming. She straddled my face and dumped globs of cum in and around my mouth as I licked her. I don't know why but she seems to get a kick out of making me do this and that seems to make it hotter for me. I made her cum and then she rode my dick to orgasm as we made out.