Love life is SO confusing

I was with a guy for 8 years. We lived together for most of this time. I really loved him and he was my comfort person. However, he did things that annoyed me such as not taking me on dates, sometimes ditching our plans to spend time with his family who always had been a bad influence on him, would always tell me that there’s so many beautiful girls out there and he wants them all not just me he wants us all at the same time. We broke up eventually because he was flirting with other girls online and he wasn’t satisfied with me. Then he started dating other people and came back to tell me he doesn’t like the other girls out there as much as he likes me and I’m better than them so we should get back together. Then he says he doesn’t know if he wants to commit to me. He seems so confused. I have since met a guy who I don’t know too well and I’ve went on a couple of dates with him and he is really nice and kind to me, tells me I’m the most beautiful girl he’s ever seen, tells me he’s a one girl kinda man, takes me on dates, and just does everything that my ex didn’t do. However my heart is still with my ex even though I know he hurts me emotionally with what he does. This new guy is amazing but when I hold his hand it just doesn’t fit into my hand the way my exes would and my heart isn’t with this new guy yet even though I enjoy my time with him. I’m feeling just as lost and confused as my ex. I was with him since I was a teenager. Like when I cuddle with my ex it just feels so comforting and right. Whereas when I hug this new guy something doesn’t feel the same. Maybe cause it’s still new I don’t know. I’m feeling lost and don’t wanna lead the new guy on but I do like the new guy, but I wish my ex could just be who he was when I met him he’s changed over the years and has narcissistic traits that I don’t like. I just wish I had someone to talk to and vent and get advice on what direction I go in from here. Like I’m sad when I’m not with my ex and I feel lonley and depressed. But the new guy is good company too but I just don’t feel anything for him yet and I’ve been going on dates with him for a few months. My ex and I broke up in December. But then I feel like I can’t be with my ex cause I don’t feel special to him I feel replaceable.