hi! ok here I got the answer... first of all, you have to get married... you can only marry sims from free play mode, sims like ginger, pamela, rod, etc etc. when you are married, just kiss your wife...
You can't have babies in the Sims 2 bustin' out, but you CAN have babies in the Sims Bustin' Out.
To have babis just get someone to love you. Then an option will come up (kiss). Keep using that...
hmm let me think last time i went on this is what i did 1.found a handsome partner 2.fell in love 3.kissed him/her till my head fell off (joke but i did kiss him about 20 times) 4.when he/she asks...