<human>: So my ex and I broke up just over a month ago after being together for two years. We were each other's first everything. Two weeks later he started dating someone else. 

Recently he contacted me asking me if I was ok and then ended up telling me that he thought he would be happier than he actually is. He then went on to tell me that he felt like he was still holding onto something. Despite this he claimed he has no romantic feelings for me he just cares about me more than he expected and that it is a lot harder to move on than he thought. He also said he felt a bit lonely and empty and sad. He hasn't told his new girlfriend about these feelings and I don't think he is planning on it. 

The day after I asked him if he was feeling better and he said he was much happier. I'm so confused as to why he is telling me these things. Neither of us has gone through a breakup so I have no idea if this is normal. We're still trying to stay in each other's lives and be friends.

Can you give me a shortened version of the text?
<bot>: Ex boyfriend still cares about me and is struggling to move on despite new gf. Why is he telling me this sort of stuff and what does it mean??