<human>: Can you give me the gist of the text in a nutshell?

So his dad's a fuckhead and he's not around and the kid's parents are going through a divorce. The kid is 2 and every time he sees me he runs towards me saying "daddy, daddy!" and looking very happy with his arms out. He stays with his dad a couple of days a week but still calls me daddy.

I've told him I'm his uncle, and not his daddy, and tried to explain things as best I can but it still happens. In fact, the other day when I went to leave the house he ran to the door and stood in front of it holding it shut to stop me leaving.

I explained what was going on to his mom and said that ya know, for one I don't want him thinking I'm his dad because when I do go it might hurt him more, and also he needs to know that I'm not his daddy and not look to me to be it. She basically said "yeah... ok" and now corrects him when he says it.

I'm not sure I know how to handle this in a fair way that doesn't scar the kid.
<bot>: 2 yr old nephew calling me daddy, i'm his uncle... explained I'm not his daddy but still it persists.