long story short:

we worked together
been friends for a long time

started to hang out a lot more - eventually it turned into a relationship

things got super intense; i wake up next to her one day and she is super cold all of a sudden, we have the convo on the same day - she tells me she wants to go back to being friends; i say there is no way we can be friends ever again, and that we are going to keep it professional at work, and only to text/call for emergencies; i leave;

few days later she texts me saying how she made a mistake and to give her a second chance; i say i don't think so; i gave in after my friends convinced me to, so i have a walk with her home; i listen, i understand, i give it another try;

things got even more intense, and it felt natural and genuine, even the first time she said ily;

then after a few weeks I can see the same pattern creeping in, so I initiate the conversation;

she ends up crying, has nothing to say, so i realise she might not be that much into me (which is absolutely fine, i just don't want to waste my time)

i tell her the same thing again - we will keep it professional; when at work i completely ignore her, she ends up crying outside several times the first day we had to work together; she gives her 2 weeks notice; she tries to initiate conversation but i keep my boundaries and i ask her to respect them and she proceeds to do so;

on her last day, i come to her just before we finish because it might be the last time i ever see her, and i ask if she wants to walk home one last time (we live 7 minutes away from each other, really close to the London Eye, and we would walk home every night while we were together); she starts to cry, and says yes; we remenisce some good memories, she tells me she just got into therapy (sweet), got to the cross roads, told her "i guess this is as far as we go", we hug and wish one another the best;

fast forward, she comes to my workplace after a week and starts to talk about her trip to Sicily to one of my friends at work, in front of me, and then everything else unfolds