With MDanything one would have the urge to hug and kiss people.
Are you sure you read MDA and not MDMA? MDMA is much more of a euphoric feeling that gives that urge to hug and kiss people. MDA is a much more speedy/chargey feeling due to more dopamine being released than compared to MDMA. Both release massive amounts of serotonin which creates the lovey feelings, MDA's surge of dopamine as well creates a slightly longer duration (for some people) and a much less empathogenic experience.
Hope that helps.
EDIT: Your name is Trancetasy & you've been here since '06, I'm not saying anything but I have a feeling I just got trolled big time haha have you never heard of MDA?