Does this sound like a sex/porn addiction?

I am in a relationship. I can’t stop watching porn. Even if me and my bf just had sex, once he leaves I watch several videos and get off several times and even then I’m still insanely horny. So much so that I still need relief and have to pleasure myself. When I’m at work, my male coworkers flirt at me and degrade me and I love it. It turns me on a lot and all day at work i day dream about having sex with them. What is this? Why am I like this? Is this a sex addiction? I don’t want to cheat on my bf but I get so horny thinking about sex at work. Even the cooks at my job sexually harass me and I like it. What should I do?