I just don't know what to do or think. I went to work on Saturday night and when came home she said she had been lonely and so had arranged to meet up with an old friend who now lives in the same city as us. This would be an old friend with whom she had sex with occasionally prior to us meeting and subsequently getting married. I drove her there last night and then proceeded to go to work, spending the entire shift wondering and worrying. When I finished work, she had not come home. I texted her to ask whether she was coming home only to find that she's fine back to his place 'to watch TV and chat because they were playing crap music'. Eventually find out where he lives so I can pick her up. I'm then left waiting for 30 mins. Virtually no conversation in the car on the way home. I don't sleep a wink, she's sleeping like a log - the only time she sleeps as heavily as this is when she's taken something to help with her sleep, or she's had sex. I get up about 6am, get a glass of milk and check her Facebook messages. She'd been messaging him all of Saturday evening (whilst I was at work), being very flirty - even starting the conversation off with comments about how she'd been having naughty dreams about him. I'm lying here in bed whilst typing this out on my phone. She's still asleep next to me. I'm freaking out.