Childish in the Beginning and Content with Long-Lasting Love

Six years ago, An An (Fang Ziyu) was abandoned by family, friendship and love at the same time, and fell into the deep sea in despair. Six years later, due to deliberate arrangements by caring people, An An reunited with them again. She originally thought she could simply say "Goodbye and be safe". But I never thought that I would never have the chance to say this. She thought it was just a chance encounter, but as they got along, An An found that the person who hurt her the most seemed to be unwilling to let go. What should she do?