I recently started dating a man I met at work - its been a couple of months and I'm taking things slowly having come out of a 5 years relationship 6 months prior to that. He is friends with another work colleague and they do a lot of organising activities together - many people ask if they are a couple but she is married, albeit unhappily, and they both maintained no even before we started dating. I have chatted to him about their relationships recently and he has said he feels it is more one sided but as he only came to the UK 5 years ago and has few friends outside work he has just allowed it to happen. Last week we went for our first weekend away together and were sauntering on the beach when she started calling. And didn't stop. Then the texts started. After he ignored her we enjoyed the rest of the day but I said maybe you need to tell her you have a girlfriend even if not who (don't want to be open at work just yet). He said he had been answering less texts and as had been spending time with me on evenings wasn't available for her as much. Last night we needed to go to buy something specific for work and as I have the credit card I took him. We stopped off at his house first for a cuppa and were just about to leave when he got a call. I said just answer it its no problem so he did. And she ranted at him for 15 mins having driven to his house and finding my car there. My initial reaction was they must be having an affair - this is not normal behaviour - but he said no. He then told me about how since we had begun chatting more at work (pre any dating) she would slag me off on a professional basis, how ugly I am, how I had an affair with a man from my last job whilst I was married (I divorced in 98!) and so couldn't be trusted at work. He stopped at mine last night and woke up to 35 texts and 5 missed calls. Am I being naïve? surely he would admit it now as if she is woman scorned she would just tell me? One of the men at work does now as we went for a drink with him and he said ' Ill keep it quiet especially from 'her name' which I didn't think anything of at the time but is very odd. How do I deal with this? Sorry for lengthy post :(