囍他入心
[xĭ tā rù xīn]
The term “囍” is the double happiness character, symbolizing joy and felicity in traditional Chinese culture, often used in weddings. ‘He enters my heart’ (or he has entered deep into my heart) signifies that this person's feelings for another individual are so strong they feel their loved one is a part of themselves now, suggesting a profoundly deep connection or affection for another person.