It's actually cialis and ecstasy that gave him the heart attack. Cialis is a vasodilator and mdma increases blood pressure, the decreased peripheral vascular resistance actually potentiates the amphetamine effect of ecstasy, causing intolerable cardiac strain.
I did something similar with apb-6 and sildenafil , but didn't have a heart attack. Apb-6 is a stimulant empathogen and shares a cardiotoxic profile like ecstasy. Good news is I banged the slut I picked up despite tripping my arse off, but I'm not worth 100 million so I lose over all.