how do i ask a sim to pindah in with me???

it depends on if anda are using sims2 atau sims3 for the aging. In sims3 its in the options for the game, anda can just turn aging off. In sims2 anda open up the cheat tab and type aging_off. to turn it back on its aging_on. anda keep being romantic/talking to the person anda want to pindah in because the options on interacting with the sims change depending on how long youve been talking to them (in sims3)