Lost in translation

I hooked up again with K-boy last night. Earlier he had told me he was busy. Then he got in touch in the afternoon to ask if I was still free. Turned out he had arranged to fuck another guy around middle of the day but he hadn't got off and was still feeling horny.
I'm now getting to know what he likes – sweaty pits, eating me out, swallowing as much saliva as I can give him, long kisses. I had an empty stomach so even managed to deep throat him briefly before starting to gag again. I need to work on my technique.
But that's all foreplay. Before too long he rubbers up and he's back in my hole, big and hard as ever. He must have been frustrated from lunchtime: as soon as he got into me he started pummelling me, hurt like fuck but getting banged pelvis to pelvis is also a huge turn-on. 
And so it went, for about three hours. Making out long and slow, some hard fucking, while in between he buries his tongue in my arse or my pits and pigs out. And he fisted me. When he has his fist in my hole he watches it the way a little boy watches a new toy: wide-eyed, completely absorbed. 
He has a tall mirror near the bed. His big dick sticking out from his lean legs and torso is great to watch. So is the variation: up high, plunge fucking me as I'm on my back with legs wide; kneeling between my legs and just swivelling his pelvis as he slides in and out. All good. Only let-down is that when he's fucking me that hard I can't get it up at all – I was limp most of the night.
Eventually he lay back and jacked himself while I licked his armpit. He squirted a big load over the two of us then squirmed as a I licked it all up – he gets ticklish after he cums.
Then we kissed and talked. I had been teasing him about him saying no more kinky stuff – when he said it originally I thought he was only half serious, and I thought he was just a bit worried about getting hooked on piss play and fisting. At one point he asked if I minded that we hadn't done any piss play this time. I was a bit puzzled: it was more his kick than mine, and it was really his call whether he wanted to do it. 
As he went on, talking about his reasons for being uneasy about the "hentai" stuff I slowly realised I had completely missed the point. What he had been getting at the previous week (and the time before, too) was the unsafe stuff – sticking his dick in me raw so he could piss up my arse, or the times when he had stuck his dick in me raw for a few minutes just for the fun of it, or maybe because he knew I got off on it. He talked about the big spike in infections in this town right now among local guys (I had to admit that was news to me) and explained why it would be such a problem for him at work if he got infected. Stuff like that. He was matter of fact about it, wasn't trying to guilt me out or anything, just explaining why it was an issue for him.
I felt a bit stupid because I had so completely missed the point earlier but also embarrassed because I had been making a joke out of something he had been trying to tell me as a serious point. I emailed him later to apologise. He came back to reassure me there was nothing to apologise for.
The funny thing is I had been starting to think that maybe I should stop barebacking with other guys if that was going to be an issue for K-boy. I enjoy screwing around but if I knew I was going to get his dick every week I would just about give up the rest, he's that good. I'm not looking to start a romance or anything but apart from the fact the sex is brilliant the after-sex is also great, and I like just being with him. Anyway I've said we should have a talk about all of that next time we get together. After all these years of careless sex maybe for a change I need to be a bit more responsible. 
You believe me? Haha. Tell me what you think. And I'll let you know how it goes.