I think I will lay off the vibes and the porn for a while. Keeping on with that is only compounding the issue. Feels like I’ve wired myself to only cum one way
Oh, sorry OP. Glad we are helping a bit. Yes lay right off that stuff.
The problem is that it's so intense, and gives such an uncontrollable result. Kind of dependable, but also mechanical. Switches are flicked, muscles spasm (including the brain).
Look, you're also scaring yourself here - you are worried now too that you can only orgasm with batteries/a screen.
I think you should do three things:
Totally ban the porn and toys.
Contemplate the wilderness for a bit and then realise you do still have a body and it does actually work with just your imagination and your fingers. And probably even better with his fingers, if he's good at it.
And start talking to him.
I know you'll feel pressure to be turned on and to orgasm in eg the texting. But honestly, I don't think it's a good path and you need to stop that too, right away. Tell him you need to go really very slowly and need to make sure your psyche and body don't get detached ... the whole of you needs to be on board.
Tell him. Tell him you're anxious about meeting. If he is in this with you, you need to start by giving him a chance to help you come to him. We all get scared or put off some time. If you don't let him know, cliche but he can't help you.
And yes, you are taking a risk: he might not know what to do. It might be bad. BUT, your only chance of relaxing enough to get turned on enough to finally have an orgasm in the presence of someone else is to ... open up. In more ways than one.
Personally I would be telling him straight up that you're so anxious about it and hmm what can he do to help?
Could be amazing. But you are going to have to trust.
Oh and by the way, very many of us I think are a little bit worried about the fragility of orgasm ... of it happening or not happening ... but he might be an amazing lover and you might have the decision taken out of your hands. Live in hope : )