Nicole Kidman thinks it’s wrong to “meddle” in other people’s relationships. The Oscar-winning actress stars alongside Liev Schreiber in ‘The Perfect Couple’, and Nicole believes that the new mystery drama series explores a fascinating subject. Nicole, 57 – who is married to music star Keith Urban – told ‘Extra’: “You never know why people stay together … I always say that about couples. That is why you don’t meddle in people’s relationships, because you actually never know what they are really doing and how they get through.” Nicole relished the experience of working with Liev on the series. …