I for one wouldn't tell my significant other about my mental illness until months have gone by and she's seen something in me that makes her not want to run away when hearing about my mental illness. Back in my naive days I talked about it to friends, until a ****-stirring mutual friend made up a story that I tried to drive off a cliff with him in the car. It's NEVER a good idea to talk about MH issues to friends. Friends come and go and friendship is more often than not based on convenience. A true, decent friend is hard to find for everyone. Don't say anything that needn't be said. Your friend sounds like a true ****. You don't need that, IMO.