Formal:
* मुझे उससे बहुत प्यार है (mujhe usse bahut pyaar hai) - This is the most common and literal translation, meaning "I love him so much."
* मैं उससे बहुत प्रेम करता हूँ (main usse bahut prem karta hoon) - This is a more formal and poetic way to say "I love him so much."
Informal:
* मैं उसे बहुत प्यार करता हूँ (main use bahut pyaar karta hoon) - This is a less formal way to say "I love him so much."
* वो मुझे बहुत प्यारा है (vo mujhe bahut pyaara hai) - This translates to "He is very dear to me," conveying the same meaning.
Other options:
* वो मुझे बहुत पसंद है (vo mujhe bahut pasand hai) - This means "I like him a lot," which can be used to express strong affection but isn't as intense as "love."
* वो मेरे लिए बहुत खास है (vo mere liye bahut khaas hai) - This means "He is very special to me."
Note: The specific way you say it might depend on the relationship you have with the person you are talking about and the context of the conversation.