OK so I'm in an open relationship (basically one sided as I have no interest in even talking to myself at the moment let alone meeting somebody new). I'm fine with him doing this shit but don't lie and don't bring it into our relationship was my 2 terms. But when we're cuddling on the sofa or spending time together every really he sits on dating apps or looks at porn (as if flicking through mumsnet). I'm also aware he's been talking to another woman, and his phone is constantly pinging with messages. It bothers me as I feel under pressure in my own home. The other day he was like what are we doing on Thursday and I knew straight away he was planning to go and see her. I questioned him on why he wanted to know but he insisted there was no reason. Now today he's said there is a reason and he wants to go and see her tomorrow for 8 hours. I don't know how I feel about that. This whole things started making me feel sick.