It Payed Our Bills

When I was nineteen I let an older guyccalled Mike, fuck me for a hundred quid.
I was desperate for the cash, so I could give it to my mum for food. (We were extremely poor)
Mike who was in his late forties had me suck his fat cock first, then over a half hour of mostly doggy fashion fucking, he taught me how to take his cock deep up my arsehole.
It hurt at first, but it soon began to feel amazing as he fucked me harder, deeper and much faster.
Just before Mike shot his jizz up my arse, I came so strongly without even touching my cock.
A week later he paid me again, only the sex lasted well over an hour and I actually sucked his dick clean twice, after he'd cum deep inside me both times.
Six years on and I'd not had gay sex since then.
I'm now living with my girlfriend and our sex is good. But there's been an added sexual twist to my life.
The same guy from my teens has moved into the flat across from ours, after living abroad for four years.
As soon as we met on the stairs Mike let me know he missed my cute arse, and wondered if I fancied a fuck.
It made me feel so horny and I immediately invited him in.
After meeting him only minutes before I was on my knees sucking on his cock.
It brought back all the old memories from our first two sexual encounters and I found myself aching for his dick to fuck me.
Knowing my girlfriend wouldn't be home for hours, I stripped naked and told him I wanted to do everything.
We fucked all over the flat, with Mike cumming inside me twice and over my face and tongue once. And when we fucked he took me in all kinds of positions, making me cum twice during the sex.
It truly was a magical day and I knew during the sex I'd want to experience more. The weird thing was, after the sex as we sat together on the sofa kissing, he paid me a hundred pounds saying he wanted to help.
That first return fuck was in April of this year. I came clean to my girlfriend after our new neighbour had fucked me several times. To be fair I didn't really have a choice, as she caught Mike leaving our flat carrying his bath robe and only wearing just his boxers.
She asked me what had been going on, so I confessed to enjoying cock.
She actually looked relieved, if that doesn't sound too weird. It was then she told me she thought I was seeing another woman. When I asked her if she was bothered about me enjoying Mike's dick up my arse, her reply was "Well I can't fuck you. So no".
Mike and I didn't push it after that. We'd only fuck in his place, but my girlfriend knew he was shagging me.
Then during sex with her one evening, she asked me if I loved him. I told her the truth that it was only sex and I got off amazingly strongly when he fucked me. And that's when she pushed my face into her pussy and told me "I want to watch".
Two days later as she sat opposite us in a chair playing with her own clit, Mike and I fucked on our couch.
I'd never seen my girlfriend so horny and have so many orgasms. By the time Mike had cum deep inside of me as we fucked missionary, my girlfriend had easily had over a dozen climaxes. And each time I heard or saw the sheer joy coming from her.
At no stage during that fitst time did my girlfriend get involved with Mike and I. But that is not the case these days.
She and Mike still don't interact sexually, even though I now wish she would in some capacity. But whenever he fucks me, which can be three to four times a week, and she's around, my girlfriend will suck my dick, or even rim my arsehole to get it ready for Mike's cock.
Since she's been involved though, I've mentioned a few times to let Mike fuck her. She's not having it so far, but I've seen the way she's looked at his larger cock when she masturbates as we fuck. And it's a look of want.