Masterbate

This is one of disadvantage of watching porn.

because we get to much involved in virtual content that much that our subconcious mind does not react in the real world that it has to be....

What is it in the porn that gets you off?

Maybe ask your gf if she's comfortable doing that (whatever it is).

Ive done much research on the subject of how porn affects the brain. It makes your brain release an overload of hormones while watching, so when you’re in a normal, real sexual encounter, your brain releases less of those hormones, so it doesn’t satisfy you. Eventually, you don’t want to have real sex anymore, because you body craves the “high” that porn gives you. That’s why they call Porn the new drug. The only way to fix you problem is to quit porn permanently and maybe get help with therapy. If not, you will always crave porn