本期话题：喜欢我，不喜欢我，喜欢我。。。在纠结怎么表白吗？

have a crush on someone 暗恋，迷恋某人
e.g. I have a crush on you.
Lucky you. 你真幸运

have chemistry with someone 两情相悦
e.g. I have chemistry with him.
We have chemistry with each other.

so much in love with someone

head over heels in love with someone神魂颠倒
Have you ever been head over heels in love with anyone?

Tell me about it. 跟我说说吧
有时Tell me about it. 也可以表示赞同，类似于“可不是嘛！”