Is this a performance issue or a lack of attraction thing?

Am i the reason he’s not performing?

I know, it may be the oldest question in the book when this happens, but stay with me. I’ve known him for a few years now and we’ve been casually flirting. I always felt there was attraction and sparks. In the past weeks we’ve been sexting and it’s been great and hot. So we hooked up one night, but we couldn’t get it on. We fooled around, he was hard. I have him a BJ, he was hard (but he didn’t finish). But when he was about to penetrate me, he went soft. I went down again, he was hard again. Stopped the BJ, soft again. He said it has nothing to do with me but i know girls he dated in the past. They never mentioned anything like this, some of them keep coming back to him to hook up. I didn’t say anything to hurt him though, i was supportive and did my best to help him. Asked if there is anything i can do. Although to be honest, i did felt like he wasn’t there, with me, like he was somewhere else, worried or preoccupied with something. I asked him, he said no. He’s kind of private with personal stuff… I got into my head and thought maybe i am not what he expected. Or that I am less hotter than his other girls and he regrets giving this a chance… Or maybe he was hoping for a BJ and nothing more and i was played. At some point i was kissing him and teasing him but he just gave up and he didn’t try pleasuring me at all…

What’s your take on this, guys?