Meaning of liàn ài:
恋爱
(romantic) love; CL:個|个[ge4],場|场[chang3]; in love
Tāmen yǐjīng tán le sān nián de liàn'ài.
他们已经谈了三年的恋爱。
They have been in a romantic relationship for three years.
Tāmen zài dàxué de shíhòu jiù kāishǐ liàn'ài.
他们在大学的时候就开始恋爱。
They started dating when they were in college.
Tā hé tā yǐjīng zài yīqǐ sān nián le, tāmen hái zài xiǎngshòu tāmen de liàn'ài shíguāng.
他和她已经在一起三年了,他们还在享受他们的恋爱时光。
He and she have been together for three years and are still enjoying their time being in love.
to have an affair
Tāmen zhèngzài rèliè de tǎolùn guānyú liàn'ài de huàtí.
他们正在热烈地讨论关于恋爱的话题。
They are passionately discussing topics about love.