(Reposting from a different forum bc I need all the help I can get)

So my gf broke up with me last week. We dated for 4 years but broke up when I left for college, but we missed each other so much we decided to try again. We started talking again in January and things were going really great and then all of a sudden she became distant which i assumed was a rough patch. Last week she just stopped talking to me after a fight and when I reached out she told me it's because she met someone else about two weeks ago and started having feelings for them. She's been my life for 5 years and this is the hardest break up I've had so far. I have deoression & PTSD so this has been really really hard for me. If anyone has any tips or help I would really appreciate it. or even jokes or pictures of dogs.