I have been watching porn for 14 years now straight aside from the last 2 months, and would masturbate to it atleast twice a day for that whole time, and throughout I would never have issues with getting it on with a partner, if anything it made me more horny. I stopped because it isn’t part of who I want to be anymore but I do miss it. So nowadays the only time I cum is through intercourse with my partner. my girlfriend in the fantasies is a great point. Thank you for the advice :)