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

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