Why do I feel so guilty ☹️

My ex was still texting me trying to work things out. However, he treated me like shit & made me feel like I was being dramatic when I was going through things. My freaking counselor told me I was showing depression symptoms and put me in therapy. Yet I’m being dramatic..

He’s the kind of ex that’s hard to get rid of. Like they keep texting from different #’s & all. I met this guy at my uni. We’ve been talking for a couple of weeks and I want to see where things go with him. I told my ex that I didn’t want to be with him & to move on already. He keeps telling me he’ll show me he’s different. I feel bad because he’s over there hurt while I’m entertaining another guy. It makes me feel like a bitch almost. Like a heartbreaker /: