Can I please ask for a lil help

At times I feel like asking some guy for their pics , but I remember that I don't wanna ruin my relationship with them and don't ask them. It's mostly with a gay friend or a straight friend or reddit friend . However in order to satisfy my hunger for pics I just randomly text guys who are willing to expose themselves because they want a rating or something else. It's not like I get off on pics , I hardly see it and then go off but it satisfy me in a way I don't know . What is it and why is it? How can it he stopped? Any idea guys?