告诉你是大冒险我爱你是真心话
[gào sù nĭ shì dà mào xiăn wŏ ài nĭ shì zhēn xīn huà]
Translating to: Telling you it's a truth (dare) that I love you. The user wants the beloved one to know they have chosen a game (like Truth or Dare) because confessing their sincere feeling directly could take more bravery or they use such creative way to express true heart.