Straight girls; lesbian lovin

[Samandiriel]

Really embarrassed that I have to ask,
but I have to ask... what's "The SO" ?

Significant Other.

 

[Unsung Muse]

wow, thank you (can't believe that didn't occur to me)

i thought it was either an affectionate abbrev. for "Stella Omega"
OR a fabulous organization I really really wanted to join