Hey roxfoxreal,
Welcome to the boards
There is nothing wrong with safely sending sexual words or pictures--it doesn't make you bad and it doesn't make you a "slut" (a completely arbitrary term used to make women feel bad). A lot of us are taught to have a lot of shame attached to our sexual desires and behaviors--especially women, especially when not in a serious relationship. So it makes a lot of sense these feelings are coming up for you! But I want you to know there isn't anything bad about feeling sexual and expressing your sexuality. When it comes to the pictures though, what matters if how
you feel about sending them, and it sounds like you aren't feeling too good! Since you're feeling a lot of guilt and doubt, it seems like a sound move would be to stop sending the pictures. Does that line up with what you were thinking?
You brought up that you aren't technically "dating" and are only sort of in a relationship. How is that feeling for you? Pictures aside, I'm wondering if having a check-in with this guy about how you both are feeling about everything and what terms you might use for each other would be helpful for you?
Also, have you met this guy in person before?