Swapping Cocks

My lover has always had a very different approach to sex, and in the whole I've enjoyed it.
He often shares me with other guys our age. Guys usually with larger cocks than himself.
He tells me he's committed to me, even though these other guys often mistreat me a little.
Two months ago, instead of the usual type and age of third party fuck machine he invites to plow my arsehole, he invited a neighbour around.
Mike is in his late forties, divorced and not athletically built.
He's a burly, if that's the right term. Not fat, but broad and has a really thick eight inch cock.
We all began having sex, but I could soon see that my boyfriend wasn't overly pleased, and the reason being, was I really began to enjoy kissing with Mike.
Every other gut my boyfriend had invited to fuck me, had done just that, fucked me.
But with Mike the sex was far more sensual and with lots of kissing and caressing.
Even sucking his cock, he wanted it slow and made sure I kissed and sucked every inch of his dick.
And boy can he rim. He practically made love to my arsehole with his mouth and tongue, and it was at that point as he was giving my arse oral sex, that my boyfriend tried to stop us.
Mike who's not normally aggressive, told him firmly to go downstairs and make himself a drink. In other words 'Fuckoff'.
I wasn't sure why, but it made me feel safe and strangely loved.
When we did begin to fuck, he had me ride his cock, and Mike pulled me down to kiss me.
Still fucking me, he lifted me and put me on my back. Kissing me again his thrusts got deeper and harder. Then he put his mouth to my ear and told me he'd love us to be seeing each other more often.
He didn't press the issue and over the next twenty minutes as we fucked, ending up with Mike spooning me and stroking my cock until I came moments before his cock exploded up my arse.
My boyfriend was in a sulk afterwards and TOLD me I wasn't going to fuck him again. But in my mind I'd already decided I was going to have sex with a man who was a far better lover than my boyfriend.
Because of Covid, my boyfriend had been working from home. So it pretty much meant Mike and I had to sneak quick times together in his house.
But these past four weeks my boyfriend has been back at work three days a week.
And that's meant Mike and I have had amazing long and beautiful sex together.
He's taught me I'm not just an object for others to fuck, although I do love being fucked. But I'm a sexual person in my own right. And to that end I've fallen in love with Mike.
I'm by no means his first male lover. And being with another man is why he's now divorced.
Two days ago whilst having a long and very sensual fuck at Mike's home, my boyfriend text me and told me he's bringing a friend home to fuck me. It's the first time I've told him he's not.
He was fuming when he got in and told me, or tried to, that if he was embarrassed because he'd already promised my mouth and arsehole to his friend.
And in that statement I made up my mind.
I'm leaving my boyfriend in the next few days. Mike's already told me I could, if I want to, move in with him.
He's also yesterday evening told me he loves me, as he entered me from behind.