Discovered I can't cum without porn

I've been looking at porn while masturbating since I was about 15 (I'm 32 now). I can't remember having an orgasm without port in the last 5 years or so. I never really saw this as a problem. But I've started seeing a guy I'm really attracted to and when we had sex on Wednesday night I just couldn't finish, no matter how much he enthusiastically tried. I felt like shit. Here's a really great guy who I could see something long term with and I can't orgasm because I'm not looking at porn.

I've never had a problem cumming with porn. Looking back at sexual encounters, I can see a pattern of it getting more and more difficult to cum when porn wasn't involved, but it took this happening to make me really motivated to fix it. So I started looking at yourbrainonporn and here and decided to try the normal mode challenge. I wish I'd done this a few months ago (or longer) so I could be starting in a healthier place for the guy I'm seeing, but I'm not planning on abstaining from sex with him for months. Just because of various travel we're having 2 weeks between Wednesday's disaster and the next time we'll get to see each other, so I'm hoping (probably in vain) that will be enough to let me orgasm with him at least once.

I was able to easily maintain a full erection with him, and I was able to cum with a person 6 months ago (though not easily), so I'm hoping those are good signs.