他他他他他入我心她她她她她入我心
[tā tā tā tā tā rù wŏ xīn tā tā tā tā tā rù wŏ xīn]
The phrase alternates between he (他) and she (她), repeated multiple times. It implies being deeply affected emotionally or in love by both him and her to a degree that they've taken hold within the heart, emphasizing strong emotional influence from more than one person with a bit exaggerated effect through the repetition.