NC Opera is doing Love Letters:
Love Letters « North Carolina Opera (http://ncopera.org/current-season/love-letters/ - broken link)
Master Chorale does "Romance in the Air" every year, but it is Saturday. The Master Chorale is a treat if you have never seen them.
North Carolina Master Chorale » Romance in the Air
Cary Players are doing their Annual "Love Bits and Bites" at Page Walker, which is always a lot of fun, but not on the 14th.
Cary Players (http://www.caryplayers.org/lbb2011.html - broken link)
Will let you know if other pop into my head.