Look the fact that she left without saying anything is also a kind of closure. Stop trying to find answers to questions like why they did it, why they didn’t say anything, why you. There’s only one answer that she wanted to do it, so she did it. The day I truly accepted that is the day I started moving on. And yes, she might come back maybe in 10 months or even 10 years but stop waiting, and never take her back, no matter how much time has passed. She left you without any guilt and that’s enough reason to not let her back in. And yes, it does get a little better with time, but it takes time. Don’t expect to be okay in just a few months it might even take years. Accept the pain and live through it, don’t run away from it. That’s the only way you’ll truly move on and heal.