Sperm donor child

[Nastazia]

Good morning beautiful people.I have a dilemma.Meamd my partner have a child together and he has a teenage from one wedding which she is now too old . Everyone I bring up the subject to have another child together,he other shouts,or brings millions of excuses, sometimes fake hopes and it has been two years I really want it and he doesn't I m too old to find something else and thinking of leaving him and do I IVF

How old are you, is he, his existing child?

Go for it.

Is it as simple as just going for it? You'll still need to co parent your older child with him.
How will future child feel about all this? Not knowing full extent of their genetic heritage till their 18, and growing up with a sibling who does see their dad. It'll be complicated.
I don't understand what you mean about his older child.

I mean his teenage child is too old...for what?

No, of course you shouldn't break up your existing child's family to have another child. That would be horrendously selfish. Good grief.

Also, what on earth does this mean?

and he has a teenage from one wedding which she is now too old