I agree with Tinks. My ex is a total pain and we couldn't spend 2 minutes together without him starting about something. So for the past 6 years when he comes to collect our daughter he will ring the bell or text her, then wait in the car. When she was younger I would watch till she was in the car, and when he drops her off he waits till she gets inside but ex and I do not have to see each other. Any communication we have to do about her is either by text or email. It's not ideal for my daughter, but far better than us fighting every time we see each other, or having him be nasty and me getting upset.