Friend's birthday today and i have been invited out to a local bar for drinks. She asked me a few weeks ago. I go out about 4 times a year and if it falls on my weekend with dc then i ask my mum to babysit. This weekend however my mum is away so last friday when exp collected dc for contact i asked him if he could have them as it was a friend's birthday and i had been asked to go out. He said yes. He has just texted asking if i am going out "or anything" because apparently he has been called into work and there is no-one to babysit.
The back story however is that exp regularly tells me on his weekends that he cant have dc as work have called him in (on saturday and sunday nights and bank holiday mondays) and i always keep the DC with me. The last two times he has done this i found out from two different people that he was actually out on a nights out himself as they were with him and mentioned to me they had been out with my ex, (they obviously didnt know what he had told me).
Also his job is making security cameras- would they really need him in suddenly on a saturday evening?
What do i do? Friend has already had two friends cancel on her for this evening so if i cancel it will just be her and her sister.