3 sentences

1. 你们两个有暧昧关系吗？

   nǐ​men liǎng gè yǒu ài​mèi guān​xi ma?

   Is there something going on between you two?

   Source: OpenSubtitles

2. 他的态度非常暧昧，让人难以捉摸他的真实意图。

   tā de tài​du fēi​cháng ài​mèi, ràng rén nán​yǐ zhuō​mō tā de zhēn​shí yì​tú.

   His attitude was very vague, making it difficult to discern his true intentions.

   Source: Dong Chinese Dictionary

3. 他们两个人的关系十分暧昧，超出了普通朋友的界限。

   tā​men liǎng gè rén de guān​xi shí​fēn ài​mèi, chāo​chū le pǔ​tōng péng​you de jiè​xiàn.

   The relationship between the two of them is very ambiguous, exceeding the bounds of normal friendship.

   Source: Dong Chinese Dictionary