It's been a year since we broke up. My ex suddenly texted me and asked me where I was.

The former is always a sensitive word.

He asked how you were doing.

Not necessarily. He still likes you. It's possible that he just turned to your cell phone.

Maybe my girlfriend just quarreled.

I think I'll send you a message.

Want to be angry with my girlfriend. There are too many possibilities. If you really want to know the answer, you might as well ask him.