那就得看细节了，主动型的，如果对你有好感，那一定是“你在干嘛呀”轰炸；“早安、午安、晚安”各种请安，要不然如果是闷骚型的，就看他是不是总能秒回你的信息。
nā jiù děi kàn xìjié le ，zhǔdòng xíng de ，rúguǒ duì nǐ yǒu hǎogǎn ，nà yīdìng shì “nǐ zài gànmá ya ”hōngzhà ；“zǎoān 、wǔān 、wǎn ān ”gèzhǒng qǐng ān ，yàoburán rúguǒ shì mēnsāo xíng de ，jiù kàn tā shì bùshì zǒng néng miǎo huí nǐ de xìnxī 。
Then that depends on the details. More pro-active types, if they're interested in you, will definitely bombard you with "What are you up to?"; and the three goods, "good morning, good afternoon and good evening", otherwise, if they're "still waters run deep" type, then you should see if he replies to your messages within seconds.