When i am in love with someone (which is seldom), i :
Always say the wrong things. This guy i loved very much was very
tired so he leaned on my shoulder, i said:''What u doing ah?'' Ai
yoh, i slapped myself later cos i of cos wanted him to continue
leaning 
Always smiling, my best frn will know
Always talking about the person
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And if i dun like someone, i will:
Stand right when he stand left
Sit far away
Feel uncomfortable when he is too near 