Dua When Someone Informs You That They Love You
أَحَبَّكَ الَّذِيْ أَحْبَبْتَنِيْ لَهُ
Translation :
May He for Whose sake you love me, love you.
Transliteration :
Aḥabbaka-lladhī aḥbabtanī lahu.
Hadith:
"Anas (raḍiy Allāhu ‘anhu) said: “A man was with the Prophet ﷺ when another man passed by. He said: ‘O Messenger of Allah, I love this person.’ The Prophet ﷺ asked him: ‘Have you let him know?’ ‘No,’ he replied. He said: ‘Let him know.’ He met [the same man] and said: ‘I love you for the sake of Allah.’ He replied with [the above].” (Abū Dāwūd 5125)
Miqdām b. Maʿdikarib (raḍiy Allāhu ‘anhu) narrated that the Prophet ﷺ said: “If any of you loves a person as his brother, he should tell him that he loves him.” (Tirmidhī)