So this guy and I started seeing each other 2 years ago. We work together but on different floors. We dated for 6 months or so but he was getting over a messy breakup and I wanted something more serious so we decided to part ways amicably. We had stayed friends who talked every day, but in January this year I was honest with him that I couldn’t get over him while we were still in communication and it would be easier for me if we weren’t friends any more. He was lovely about it. I have been working through my feelings and feeling really positive. However today at work I’ve been told we’re having a huge company-wide reshuffle and I will be sat in a bank of 4 desks with my ex. I don’t know how I’ll cope with this. He still gives me butterflies if I ever pass him, but it’s been manageable because it’s only ever in passing once a week maybe. I don’t know how I’ll cope being sat right next to him 8 hours a day. I don’t want to quit my job, I can’t exactly ask to move, and we get along so well I can guarantee my old feelings will creep back in. What do I do? How do I cope with this?