DH says he was with a certain group of friends last night. I have a niggling feeling that he may be cheating. Things are really rubbish between us and have been for a while, and there have been some small clues, but no real evidence. I'm not ready to leave as I need to sort out finances (he controls it all) and childcare (no support in the UK). But I want to find out if he is cheating and get evidence in preparation for what will likely be a very messy divorce. How do I ask these friends if he was with them last night?? I don't want DH to realise I'm suspicious and I need to ask them in a very innocuous way so it doesn't get back to him..