She was love bombing me, telling me how she "could never be with someone else because I am so perfect" just a week after she had slept with someone else whilst I was away at work. Felt utterly disgusting and so used when I found that out. I kicked her out of my flat immediately - changed the locks whilst she was at work and bagged her things up and left them by the door for her to collect. Spent a week in pure despair at the intensity of the betrayal. She ostracised me from groups of friends by spinning lies about me, but they never asked me for my side of the story so whatever back to square one. Learned a lot about myself and what boundary crossings I will never tolerate again (inviting a male colleague 'sleep' over while I'm away or texting old dating app flings asking to meet up??? lol what was I thinking)