You haven't, you keep saying stuff like seems like i'm alone in thinking it's weird.....seems like it's normal and no one else would bat an eyelid...
Of course logically it is weird for people who abandon their kids and their childrens mother to text randomly saying they love them because it clearly isn't true or they would be in their childrens life and wouldn't have left all of the parenting load to the mother.
But in real life we all know that people don't behave logically and do all sorts of shitty assholey stuff all the time, send weird messages that clearly aren't true, try to get into peoples heads and so on.
So for that reason it's not weird because we all know that idiots always do stuff like that.
Surely you have seen things like this happen before and know that idiots do things like that? I'm not sure how you could not have as unfortunately there are millions of absolute idiots out there!
People don't question idiots behaviour as much because it's 'normal' and not 'weird' for them to behave that way.
I know a couple of men who have tattoos of their kids names and write stuff on social media occasionally about how their kids are their world and how everything they do is for them....even though they don't see their kids or contribute to their upbringing, pay maintenance or help the mother in any way. Those men are not rare or unusual, everyone knows deadbeats who don't see their kids but pretend that they love them.
So that's why your posts are coming across like you want to think there's something real in his messages to you. Surely you should just be seeing him as one of those deadbeats idiots. What he says doesn't match up to his actions.