Well, if he called and told your parents then I'm wondering if you said anything that was a red flag. For example, suicidal thoughts or self harm or being abused? In general even saying you have panic attacks or depression or paranoia, and he thought to tell your parents says to me that he cared. A lot. Because in my experience you tell people things and they roll their eyes and complain that you need to stop being a whining baby and deal with your own problems....

As for why you are feeling this way... that's hard to say. Have your parents reached out to try to help? Or have you gone to them with your issues? Are you in treatment at all or talking to anyone? If you can get help then you should. Maybe you feel guilty over the whole thing and just don't know how to recognize it? I think if you had some help from a therapist or something this would be good to talk over with them.