I got accused of having borderline by friend based on google

So i have a bipolar 1 disorder and asperger diagnosis. Im currently about to see a therapist about considered DDNOS. I voiced my concern that i suffer from dissociation to my friend and he started asking alot of detailed questions, the next day he layed on me that he thinks i have borderline and that he had googled and he thought it fit.

The person in question have asperger aswell, so i think this is his autistic traits not understanding boundaries and thinking he somehow have the same capabilites as a psychiatrist?
It doesnt make sense to me, and its causing me alot of anxiety seeing as it could fit, but noone ever before mentioned anything of this and i kinda think dissociation which my therapist also think fits.

What should i do in this relationship, this happened before and we stopped hanging out for a while (overstepping boundaries). But im really at loss here, if its his autism i dont think hes ever gonna change.
Guess i kinda asked for it though seeing as i even talked to him about my wellbeing.

You seem to have things well thought out. You see the issue, and especially because it has happened before (overstepping boundaries). Given what you have said it does seem like your friend will not stop his behavior. Perhaps one last talk is in order. But you have to take care of your own mental health. If he can't understand that he is being more of a burden then perhaps it's time to make changes.

Sometimes you got look at the value of the relationship to you and if you can tolerate all the craziness that happens. Both my wife and I have mental illness histories. We both get very depressed to the point as extreme as it gets. I suspect we both have bipolar disorder and severe depression. We have a Love-Hate relationship. Maybe I even have Borderline Personality Disorder. Things have gotten very ugly between us... but we stay together because we value the relationship and love each other and would be so lonely without each other. I also don't think anyone else would put up with my extreme anger and mood swings and crippling depression.

So you got look at these things in relationships.

Everything appears to be perfectly planned out for you. You are aware of the issue, particularly because it has occurred previously. Based on what you've said, it appears like your friend's behavior will continue. Perhaps another discussion is in order. You must, however, look after your own mental health. If he can't see that he's becoming a burden, he has to make some changes.