Some back story. I'm in my 30's and I've been with my gf for years, however we are currently separated for about a month. I'm at a temp job right now for the past 2 weeks. I work very closely with another girl (let's call her Jane) who I'm very attracted to both her looks and personality. We get along great. She may even be into me too. When we were just getting to know each other she told me she was single, and me if I was seeing anyone. I told her the same as I didn't really want to get into the whole "I'm separated" story and probably because I'm crushing on this girl. I haven't done anything outside of talking to Jane like you would a friend and if I'm being honest some flirting. I have no plans to do anything further since I'm not completely broken up with my current girlfriend. I feel a huge amount of guilt from all this, but at the same time I'm excited to go to work and see Jane as it really brightens my day up amidst all the relationship woes. AITA?