So my fwb was over the other day and we were having sex but he couldn't stay hard because he couldn't see anything. He ended up getting his phone out and looking at a picture of my ass he'd taken last time we met up and I felt kind of bad that he couldn't keep it up without it but idk if it's because of me or because he watches too much porn? I don't know how often he watches it or how much he wanks but I have heard of too much porn having this effect on guys before. I'm not sure what to do from here or if I should even do anything at all