It's a romantic expression that signifies the speaker is developing feelings of attraction or love for the person they are addressing. It implies that they are becoming increasingly enamored with them.
Here are some nuances to consider:
* Informal: This phrase is very informal and is typically used among friends, family, or romantic interests.
* Strong feeling: It implies a strong feeling of attraction, but not necessarily a fully developed love yet.
* Can be playful: Depending on the context and tone of voice, it can be used playfully or seriously.
Example:
* "Te estoy cayendo para usted, no puedo evitarlo" (I'm falling for you, I can't help it.)
It's important to remember that language can be nuanced and specific to different cultures. While this translation is accurate, the exact meaning and impact may vary depending on the context and the relationship between the speaker and the listener.