My ex is a sweet man No he is not. Sweet men do not give ultimatums like that especially when the situation is of HIS doing. HE told you he was infertile.
but so adamant he doesn't want involvement Absolute wanker really.
He is much younger than me and although he knows I didn't get pregnant on purpose (without going into detail, he thought he was infertile) he is mad at me for not taking his age into account (mid 20's) and getting an abortion That's brilliant that is. HE tells you he's infertile, he fucks up and isn't, yet YOU are supposed to put yourself through an abortion because he doesn't want to face up to his responsibilities. Mid 20's is not a young teenager. He needs to grow the fuck up and stop talking like a stupid 15 year old (a sensible 15 year old wouldn't say that).
My son misses him as he was brilliant with him That is very sad :( but your DS is young, that will fade and he has his Dad.
The relationship was lovely, the best I've had, until this happened How long were you together? If it wasn't this, it would have been something else - try not to think of this as being because of the pregnancy, but because he's a fuckwit.
I don't want him back Please remember that when he comes knocking and remember how he tried to guilt you into an abortion. Nice men don't do that.
but I can't understand how he can reject his own child No, it's hard to understand isn't it :( He might change his mind when he sees the baby/it becomes real, which might be nice for the baby, BUT I would never get back into a relationship with him as I would NEVER trust him not to run out if things got 'hard work'.
When I say this to him he says I am emotionally blackmailing him YOU are emotionally blackmailing him - FFS - he is the one who tried to make you have an abortion to keep him! He's acting like a child. Tell him to 'do-one' until he grows up.
I'm sorry he's let you down so badly :(