How does mdma affect you having sex?

MDMA & sex. Mdma combines amphetamine and mescaline-type hallucinogenic effects. It increases release of serotonin, dopamine, and norepinephrine -- with increased energy, euphoria, and increased closeness and empathy plus distortions in sensory and time perception. Serotonin also causes release of oxytocin & vasopressin -- leading to increase in sexual arousal. Ability to act on this may be affected, though.
MDMA, commonly . Called ecstasy and a kind of metamphetamine may enhance sex by increasing self- confidence , emotional excitability and loss of inhibitions. However it may also cause anxiety and apprehension of loss of control. http://en.m.wikipedia.org/wiki/mdma.
Mdma. Also known as ecstasy, it causes elevation of brain adrenaline, Dopamine & serotonin, leading to feelings of increased energy, euphoria, empathy towards others, emotional warmth, sexual arousal & distortion of sensory/time perceptions.