Oh come on man... really? Me and the lady recently broke up and even here I can't escape the approach of Valentines Day!
Saint Valentine Day isnt just about lovers. Saint Valentine was imprisoned, beaten, and beheaded for performing Christian marriages at a time when it was illegal to be Christian. Because of his service to these lovers, he is the patron saint of young lovers, however... We could all do well to follow his example and do something selfless for others.
So Saint Valentine Day could be a day of serving others whether we are in or out of love.
haha, or.... maybe if you want your lady to be less gushy about Saint Valentine day, tell her about how and why he died, and that 14 Feb is Saint Valentine Day because it is the day he was martyred.