Since tomorrow is Valentine's day....
Here's how to say it in Korean :
발렌타인 축하해요 = Balentain Chukhahaeyo = Happy Valentine
And coz it's on same day with Lunar New Year.. Here's how to say Happy Lunar New Year in Korean :
새해 복 많이 받으세요!!! = Sae hae bok mani ba deu seyo!!! = Happy Lunar New Year!!!
Happy Lunar New Year aNd Happy Valentine's Day For You~~~
Ps: On Valentine's day in Korea, couples may exchange gifts, or people just give little pieces of chocolate, but they don't say happy valentine's day.. Is that true? -_-;