보고 싶어요. ~ Bugu shipeoyo (lit. means I wanna see you) always hear this in korean dramas. 난 당신이 그리워요 ~ Nan dangshini geuriwoyo ( to translate lit: Me you I miss/ which means I miss you). But i think they seldom use this, i don't know why. To get more help, the next time you ask, try posting your question in the Korean section. There are a lot of Koreans here to give you accurate answers.