I found porn quite a few years before I found a vagina, I watched a good amount when I was single.
I believe it did cause issues with women once I started dating, I had a really hard time finishing without doing it myself because I became accustomed to that or they had to get that shit just right, then they thought something was wrong with them because they couldn't get me off. Then there are the thoughts that run through your mind, you want to flip em like this, hang her over the edge of this, why is she not deep throating that bad boy etc etc.
Most of the time that shit isn't happening for a little while into a relationship. So I don't think it messed with my sex drive, as I wanted it but I do think it led to difficulties in real life situations when beginning to date women.