OMG FF! You are in an awful situation. With such strong feelings and emotions beating you up every day, I guess the only way to break the torture is to stop seeing him. If you dont then this is you every day forever . Tough to start with, but why not then focus even more on your running - join a gym or jogging/running club, set yourself a stretch running goal that you can focus on achieving for the next 6 months. Enter a race, raise money for charity, and cross the line having run further or faster than ever before. If you can manage that, you will be in a much better place in 12 months time.
Hi Alice, Personal experience for me was no running for 5 weeks with ITB problem, followed by 3 weeks of only minimal runs to test the injury. I found that within two weeks of being back to normal, I was back to the fitness level pre-injury. If you were running 3 times a week before, i'm sure you will be back to 100% faster than you think.
You get lots of time to gather your thoughts on a run that you dont get any other time of the week. Sometimes that's good, sometimes that's bad. For me, if i'm down I pick an upbeat playlist, feel better by the end of it.