听说你丢了一颗心话说你偷了我的心
[tīng shuō nĭ diū le yī kē xīn huà shuō nĭ tōu le wŏ de xīn]
This internet name reflects the feeling that you have had your heart stolen, which implies the speaker is smitten with someone, expressing a bittersweet sentiment about lost and gained hearts in love.