Your friend's an idiot.
MDMA is ecstasy. Molly is just short for "Molecule", the crystal form of MDMA.
EDIT: Wait, no, you're an idiot too. Yeah, MDMA and ecstasy are the same thing. But "ecstasy" is usually used for it in pill form, whereas molly is crystals.
Indeed. Molly is supposed to be the freebase form, ecstasy is a street name for MDMA in general, though it usually comes adulterated or cut with something. When I was into that stuff and we would get shipments of the pure freebase, we found adulterating it with meth in a 3 parts MDMA 1 part meth mixture made the roll much more intense. Much better than the freebase on it's own, and much better than anything else we tried to adulterate it with, and every other variety we had tried outside of of our experiments. Man, we were into some strange things back then.
According to Erowid, much of what is being sold as MDMA, with the molly or ecstasy designation is actually just other research chemicals that also have an empathogenic effect. Usually they are analogues of MDMA or MDA, but also generally much less is known about them so we really have no idea if they have any unintended consequences past MDA and MDMA. So, taking it is taking a bit of a risk, but usually the risk never really materializes.
I think I remember you from The Flood. If I am remembering correctly, you used to talk about having ASPD and talking about your problems with empathy. If you're doing MDMA, no doubt you got to experience what empathy feels like, in a strong and undeniable way. I am kind of curious as to what you thought about it.
OT: I have no idea who Tobiscus is, but rape allegations are always a serious thing. Not knowing anything about it, I don't think I should comment past that obvious platitude.