Hi Overpowered, Time to take a complete break from the dreaded porn, because have porn induced ED, you can google that last bit for more info, but you will find out that you need to take an 8 week break, no masterbating and no porn or sex, and this should reboot your system with luck, its a case of what you do with your hand is remembered by your brain.
Its a case of sucket and see.
Good luck
You just sound like you are overthinking things.
And the fact that you lost it last time has given your heightened anxiety over an issue which may or may not happen in the future.
This has knocked you confidence and with it your libido.
Just take it slow. Try not to rely on the porn as a gauge of whether you will perform sexually. Its not the same watching porn as there are a whole range of feelings and emotions which aren't involved.
Its completely normal to be nervous the first time, so try to just go with it, then you will gradually learn and relax and be comfortable with tho you are and what you like.
Good luck an try to chill it happens to most people at some point.