You said she didn't know what it meant, and then you went to Baidu to look it up. You must care about your performance. Judging from what you said above, it should be that she misinterpreted what you said and thought the last sentence was for her.

Just read the following questions. It is ok to send flowers on Valentine's Day. There is nothing to be ashamed of. You like her, you have to express it.

I hope I can help you. Thank you.