I have 2 people and they both definately want kids, i've kept them happy and healty and both had a baby boost, but when i put them together it says 'cant agree its time to have a baby'
any help?

That just means they are arguing. Keep dropping one over the other until status changes to "trying to make a baby". The only time you can't *make* them try is if it says "Too soon to make a baby". If they can't agree, be persistent until they try to make one!