Fall in love Meaning: When we fall in love with someone, we start to have very strong romantic feelings for that person. We use "in love" to mean that we are having very strong romantic feelings. And then if we combine it with the word "fall", it means that it's the beginning of this kind of relationship, or it's the beginning of these kinds of feelings. Example sentences: 1. I think I'm falling in love. 2. Do you think he is falling in love with her? 3. They fell in love a long time ago. Example dialogue: Two friends are talking about another friend's relationship. A: I think Dave is falling in love with Susan. B: Why do you say that? A: Because he has been buying her flowers almost every day. B: Yeah, that could be a sign he's falling in love. Practice: Have you ever fallen in love? With who?