Sadly, Gardener, per the Merck Manual, "There is no recognized stimulus for oxytocin release in men, although men have extremely low levels."

you're not alone!

M60
H52
D20
M14 yrs
OW-old gf from 1986
bomb-5/18/08
H filed for D-9/10/08
D final 4/24/09
xH remarried (not OW) 2012