does love brings nothing but hurt? why people seems to happy about love?

my first heartbreak make me create a wall to protect my heart. 

but what if there's someone. someone who willing to break thru the wall and melt me once again?

can i experience love once again? can my heart let me feels what is true love? 

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you/kang hyeri 

- innocent, cute but then turns to be cold...but then someone change her. 

- lives alone, own house since parents too busy with business overseas

- manage family business here

kim myungsoo 

- the ex- boyfriend

L.joe 

- the best friend