Am I just super cold hearted?

So last year I went through a rough breakup. We ended things on good terms and I’m over it, but honestly it really hurt me and I don’t know if I can date again after that, I’m glad it ended and I wish him the best, but I just don’t feel capable of loving anyone again. Now I have a new boyfriend. He is 100% perfect. He knows what to say, when to say it. He brings me flowers not even on holidays. He would drop everything if I needed it, no questions asked. He’s handsome, and really smart. I’m breaking up with him though, and I just feel like I don’t have much to give. It’s not even that I dont think we are a good match, it’s just that I feel like my heart is closed off from my last breakup. I moved on and healed from that, but at the same time I don’t think I’m able to love anyone to that extent again, I just don’t feel like I have that anymore.

Honestly, I am 24 and I am perfectly fine with being single for a very long time, possibly indefinitely. The idea of moving in with some girlfriends or maybe adopting a child in a few years is appealing to me. The idea of just falling headfirst into work without anything to hold me back is appealing now.

Is something wrong with me? I just feel like it’s easier to recover from a fresh wound and once you get that scar there’s really no going back from that, and I’m okay with that. Am I just super cold hearted or is this a normal thing?