Hello & Welcome, Bluesummers!

Planning on visiting the States, attending an anime convention and participating in cosplay, yes? That really sounds exciting! Depression can take the life out of adventures, but I truly hope your spirit allows you to take in all those wonderful events offer.

Speculation: From your descriptions -- losing and gaining weight, apathy toward hygiene, etc. -- it does sound as if you may have been struggling with depression for some time, and the breakup has simply intensified what was already there. Is it possible to get a full health check-up where you can also talk about how you are feeling?

As for relationships, I'm not the one to ask. My observation is good things tend to appear when you're not looking for them.

Be at home here, Bluesummers.