Formal:
* ਮੈਂ ਤੁਹਾਨੂੰ ਪਿਆਰ ਕਰਦੀ ਹਾਂ (Main tuhanu pyar kardi haan) - This is the most formal way to say "I love you" in Punjabi. It is suitable for expressing love to someone older or in a professional setting.
Informal:
* ਮੈਂ ਤੈਨੂੰ ਪਿਆਰ ਕਰਦੀ ਹਾਂ (Main tainu pyar kardi haan) - This is a more informal way to say "I love you" and is suitable for close friends and family.
* ਮੈਨੂੰ ਤੈਨੂੰ ਪਿਆਰ ਹੈ (Mainu tainu pyar hai) - This is a more affectionate and personal way to say "I love you."
Romantic:
* ਮੈਨੂੰ ਤੁਹਾਡੇ ਨਾਲ ਪਿਆਰ ਹੈ (Mainu tuhade naal pyar hai) - This is a romantic way to say "I love you" and is suitable for a romantic partner.
Important Note: In Punjabi, the use of "tu" and "tuhanu" depends on the level of respect you have for the person. "Tu" is more informal and is used for friends and family. "Tuhannu" is more formal and is used for elders and people you don't know well.
It's always good to be mindful of the context and your relationship with the person when expressing your love in Punjabi.