AIBU to ask for exP's new girlfriend's phone number/address now that they are all staying over with her? I only know about this because the kids have told me after the event. ExP and I do not have good relationship. I also gather that there was some time during the previous weekend with exP where new GF was in sole charge of my youngest child while exP was somewhere else with older children (new GF apparently has kids of similar ages, though again I only know this because my children have told me). So, is it ok to ask for her details? Children are 5 and 2. New GF seems nice from the 1 minute I got to say hello a couple of weeks ago. I have no issue with the kids spending time with her, they seem to like her, I just feel weird that I have no way to contact her. ExP likely to be unwilling, and haven't asked yet, but just wanted Mumsnet opinion on whether this is a reasonable request or not. Thanks