A person I'm seeing is "kinda asexual" (his words) and I want to try and understand it as much as I can (NSFW btw)

Run down I'm m19 he's m23 I think that where both interested in each other and I hope it will become something serious but it's a bit soon to say that but whatever yolo

Very NSFW from now on I'm so sorry

The first night we had together we did the deed and it was pretty good but he was not...hard....I was confused during he said it was fine and we continued

We had a break and I asked what was up he explained he was kinda asexual so I was like "oh ok I understand asexualities a spectrum and it means little to no intimate attraction"

But the more I really tried to put myself in his shoes which is just something I do with everyone and asked more questions about it the more confusing it was to me

I was asking alot maybe too much but I'm so confused on how someone can have sex, be into it (he definitely was) and just not get hard and also watch porn. Like again I'm very sorry for the NSFW but it's really hard to wrap my head around and I really want to be able to wrap my head around because I don't want to push any boundaries or make him feel uncomfortable

Like I'm not being that guys thats like "rah rah I want to have sex rah rah" that isn't an issue and with this guy it definitely isn't an issue even if it was I wouldn't care that much

I just want to understand so I know how to approach sex properly without making him feel uncomfortable or weirded out if I approach sex at all I dunno

The only thing I have got from him is that he likes "pleasuring" people as he enjoys it can someone PLEASE help me understand this