W dropped off kids tonight & passed over a cheque from "comunal" fund we have set up for boys activities to pay for school trip. Kept my distance, only discussed what was need for boys / arrangements for handover etc. She then told me that a mutual friend had came round on Tues & had worked out who OM was. I just said it would be the 1st of many, & I will not lie to people if they ask me why she left. Said goodnight to boys & then came back to give me a kiss on the cheek. No reciprocation, just said goodnight & she left. She looked very tired & jaded. Now won't see boys or me until Sat night. Older S12 is now asking why won't mum get help for her problems & has told her he wants to be a family again. She just said "we'll see". He is quite upset at her actions. Not sure if it is registering with W.