Formal:
* আমি তোমাকে ভালোবাসি (Ami tomake bhalobasi)
* আমি আপনাকে ভালোবাসি (Ami apnake bhalobasi) - This is even more formal than the previous one, typically used for someone older or of higher social standing.
Informal:
* আমি তোমাকে ভালোবাসি (Ami tomake bhalobasi) - This is the most common and natural way to say "I love you" in Bengali.
* তোমাকে ভালোবাসি (Tomake bhalobasi) - This is a more intimate and affectionate way to say "I love you". It can also be used when addressing someone younger.
* আমি তোমার ভালোবাসি (Ami tomar bhalobasi) - This is a bit less common than "ami tomake bhalobasi" and can be understood as "I love you" or "I love yours".
Romantic:
* আমি তোমাকে প্রেম করি (Ami tomake prem kori) - This translates directly to "I love you" in a romantic sense.
* আমি তোমার প্রেমে পড়েছি (Ami tomar preme porechi) - This literally means "I have fallen in love with you."
Note: The choice of "আমি" (ami, "I") or "তুমি" (tumi, "you") depends on the relationship and the context. "আমি" is more formal, while "তুমি" is more informal. "আপনি" (apni) is the most formal way to address someone.
It's also important to be aware of the context and your relationship with the person you are speaking to when choosing the right way to express your love in Bengali.