Hi @tamarind813 and welcome
I'm sorry to hear about your break-up. Heartbreak is a very hard thing to go through and it can be important to allow yourself the time to grieve. While you're going through this it can be helpful to try to be around loved ones, even if you don't feel like it, being around others who know what you're going through can help. It can serve as a distraction or be a time to talk through how you're feeling and process what's happening.
Getting out of the house can also be a good distraction, I'm hearing how much reminds you of her in the house so maybe giving yourself time away from these reminders when you're able would be helpful.
Trying to engage in interests or hobbies can be good too. Again, you might not feel like it, but giving it a go might offer some positive distraction.
Grieving a relationship takes time, I hope some of these suggestions help but sometimes the only way out is through. Take care of yourself and know you're not alone