MDMA is not capable of making you forget who your friends are, except maybe in serotonin-syndrome inducing doses.
Primarily it is an empathogenic[1] drug, not a hallucinogen.
Primarily it is an empathogenic[1] drug, not a hallucinogen.
Or so I have heard.
The serotonergic effects are a completely different matter.
[0] https://www.erowid.org/library/books_online/pihkal/pihkal109...
Someone has misinformed you. Please do your own research. There is absolutely no mention of anything remotely like what you are describing in the wikipedia article: http://en.wikipedia.org/wiki/MDMA