How to tell my son his daddy isn't his real father?

how can I tell my little boy that his daddy is not his real daddy? he loves his dad. he's 5 years old.

either-

a) tell him now like its no big deal so he gets used to it his whole life and doesnt resent you later,

or b) wait till he's mature and will understand.

maybe asking your husband or a child therapist for ideas could help too.

I wouldn't yet he is only five years old, he would not understand.

I wouldn't do it either. Just keep it to yourself and try to tell him when he is at aged 8-9. He still be young, but old enough to understand it!
What happened to his real dad? Is he seing him too?

Maybe tell him things like this isn't the man who made you, but he loves you very much and takes care of you, so he's your real daddy.

As he gets older, and can understand more, you can tell him more. I'd only let him get attached to this newer daddy if you're pretty certain he's going to stick around.

Wait is all I can tell you untill hes older and it wont matter to him if you tell him this young you mite catch him sayin
your not my dad you cant tell me what to do etc. and you dont want that wait till hes older and understands also are you married or jus boyfriend/girlfriend how long have you been together?
Have you considered this guy to adopt your son?
write me and let me know please

just tell him now his little and he will understand if you wait till his older he will be mad couse you diddint tell him earlier