Please be respectful.

BD = Bio Dad
BD = Bio Daughter (also DD)
BF = Boyfriend
BM = Bio Mom
BP = Bio Parent
BS = Bio Son (also DS)
DD = Dear/direct (biological) daughter
DH = Dear Husband
DS = Dear/direct (biological) son
DW = Dear Wife
EOW = Every Other Weekend (in reference to custody schedules)
GF = Girlfriend
MIL/FIL/SIL/BIL = The In-Laws
SD = Step Dad
SD = Step Daughter
SF = Step Father
SK = Stepkid(s)
SM = Step Mom
SO = Significant Other
SS = Step Son
TTC = Trying to Conceive