Managed to stop watching porn but got addicted to something else

I recently joined kik and I was amazed at how many people were on there, all from different places and backgrounds. At first it was an exciting experience making new friends and having interesting conversations. But then I encountered horny people too and started sexting and exchanging pics. This kinda gives me the same dopamine high as porn.

Of course this is really bad for my recovery. The good thing about all this is that I haven't opened a single porn site in the last 10 days but I have been spending more and more time on anonymous apps like kik, snapchat and omegle. Getting nudes from a girl gives me a different high and I'm starting to get addicted to it.

I realize I could turn this whole affair around to my advantage since I'm already not watching porn I just have to get rid of the sexting and trading. But I'm confused as to what I should replace it with. I know some people will say I should work out or go out and meet new people and stuff like that but will those activities really fully replace the pleasure and excitement I get from anonymous sexting or porn? Because whenever I replace porn with another activity and it doesn't work out I fall back hard on porn and it gets way way worse.

Its so fucked up that this addiction is all in my head. But I actually need to understand what is really going on in my brain to begin cleverly attacking it. Its so fucking complex I'm literally going crazy here.