I don't know how to put this, but please read

Ok, so, I'm a 17 year old male, and I haven't been in many relationships, and most of those were just me being nice to not hurt the girls feelings, but this one was something I actually wanted, she was gorgeous, funny, and pretty much perfect, and just thinking about her body made me pretty erect. But a few days ago my Hocd, which i had a few years back and thought I had gotten over came back something hard core, eventually I got over it, but I started having this weird feeling, like I can't get an erection without masturbation, I'm not asexual because I have always always found girls to be attractive, but now I find it hard to get hard by just thoughts.
I mean, she'd shown me her breasts and let me feel them up, play with them, kiss them alot of stuff. But I've always kind of had a problem with masturbation and pornography, which ive been trying to get over, so do you think that i've gotten to used to porn and now that i've had the real deal I can't get off on anything else, or what? I'm sorry if this was confusing I'm a little confused myself right now.

I think it is easy to get used to porn, yes. So that's where I'd start, by quitting that completely for a while. But I also wonder if the HOCD has some influence here. "I started having this weird feeling, like I can't get an erection without masturbation"... does that feeling include anxiety? Do you feel the need to "check" whether everything works as it used to? I'm no doctor or professional! Just noting that if there is a fear component here. obsessive-compulsive/ would have some stories from people in similar situations. Might be worth taking a look.

Are things still in progress with this woman? You used the past tense, but I'm not sure if that's because of the problem. Or because things were over between you now.