string someone along
phrasal verb with string verb [ T ] uk/strɪŋ/ us/strɪŋ/ strung | strung
长期哄骗（某人）;敷衍（某人）
to deceive someone for a long time about what you are really intending to do
She's been promising to pay back the money for six months, but I think she's just stringing me along. 她6个月来一直答应说要还钱，但我猜她只不过是在敷衍我而已。
He strung her along for years, saying he'd marry her and divorce his wife. 他哄了她有好几年，说他会和妻子离婚然后娶她。