I think cavemen and cavewomen were probably having little ceremonies since way back when....
Funny how Christians think they invented marriage, holidays, the idea of a scapegoat etc etc etc - when Judeochristianity is just a mish-mash of older religions and myths and legends all cobbled together. How the hell can anyone still believe the tripe that 'the bible' serves up is beyond me - it's all been thoroughly explained as to the sources it was drawn from, but the numb-skulls keep clutching their book!