How do I overcome psychological boner problems

Pls

Explain

>>17106306
If I cum once I can't get hard for the rest of the day, basically
Porn doesn't get me hard
Thinking about sex doesn't get me hard
I can only get hard consistently by kissing my gf or fingering her, but again after I cum that first time it's a fucking challenge to get it up again, even a couple hours later

>>17106306
>>17106328
Also this didn't happen until me and the gf started having sex regularly

>>17106328
Conditioned response. Nothing strange about it. You'll break out of it as you gain more life experiance and fuck other people.

>>17106333
It's just really inconvenient when she wants to blow me but I can't stay up