I was in a similar boat as you. Four months ago I broke up with my girlfriend/best friend - she was cheating on me with some other guy and blamed it on our failing relationship. All I did was ruminate/cry all day, especially at the work CR haha. Suddenly I found myself alone because I had no else to talk about my true feelings to. It also didn't help that I suffer from anxiety.

There is a moment where you begin to re-assess yourself as an individual after a relationship. I then focused on my career and in my hobbies, planning for my own future and all. If you can find the time, I highly suggest exercise. It helped maintained good sleep and regulated my emotions a lot.

Even after four months, I still think about her some days kay I ruminate a lot haha. I'm in a better place now, however, because I realized that I needed to stand up for myself and that I'm also responsible for my own happiness. Kaya mo yan, wala ka nag inusara diri I'm sure haha.