Those creepy sexual messages...

Girls you know theres always that one or two guys who send out creepy messages like i wanna do this and that to you right?!! On social media or whatever but the thing is it kinda turns me on. Im in a relationship we have two kids together were an ordinary couple . Recently someone messaged me a perverted message saying how badly they wanted to suck on my nipples and my pussy. I read that and my privates tingled.!! Though I unfriended the person and never replied the dirty talk lingered in mu head making me horny as hell. It has happened before i might not be attracted to the person but if they send me some dirty talk like that i get so horny. I dont let them know that though. What is wrong with me!?