Is it ok to feel bad over this?

My ex and I broke up over a year ago. He broke up with me due to protect me from certain unfortunate events happening at the time. Of course I was crushed and it did took a while for me to move on. We always eman amicable and respectful to each other bc we knew none of us were to blame for the break up. Now, over a year later, he confessed he never lost his feelings for me and now we can be together. He now has aa job, his own place, but I don't feel it anymore. I loved him, I did, I still do, but I don't feel that intimate attraction anymore. I feel bad bc he is a good guy, a great boyfriend, but it seems that my heart no longer wants him in that way, only as a friend, and he still loves me the same. I feel like a bad person, an ungreatful person, especially after what he has done for me.