Why is this guy very needy towards me even if he has a girlfriend?

We are close but he's really emotionally needy and often asking for help. Few weeks ago, he ask help from me to emotionally support him because he is in the hospital but the level of support was high because he was asking me to check on him before and after the operation. So, I did and we exchange messages back and forth prior and after his surgery even if it was overwhelming on my part.

Prior to that, he was asking help for his properties because I work in this industry and he consulted with me about it and I had to find a buyer for it which I did but the property was defective.

A week ago, he suddenly messaged me again updating me of the status of his sickness and telling me he will go back to our city and told me he prefers to just be back in our city and stay in the province for good. His girlfriend is in another city. So it led me to think they're not really in good terms. Take note he did all this even if I did not ask how he is as I was overwhelmed.

I try to hint as much as possible that I'm not okay as well. I too have my own sickness to which he responds with care and concern as well which I appreciate.

Then, he does ask me often how i am. I'm always responding late in my messages because I'm overwhelmed and he seemed to notice so he decided not to respond for days. So, naturally, i got guilty and sent him a message. Now he messaged me again regarding a new property lol.

The guy just really includes me in everything and I was about to be okay already and I suddenly feel smothered again. His problems seems to be shared with me or are we sharing problems now? What should I do?

Why is this guy very needy towards me even if he has a girlfriend?
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