Al-Miqdam ibn Ma'dikarib reported that the Prophet, may Allah bless him and grant him peace, said, "When one of you has love for his brother, he should inform him that he loves him."  

قَالَ النَّبِيُّ ﷺ إِذَا أَحَبَّ أَحَدُكُمْ أَخَاهُ فَلْيُعْلِمْهُ أَنَّهُ أَحَبَّهُ  

Mujahid said, "One of the Companions of the Prophet, may Allah bless him and grant him peace, met me and took hold of my shoulder from behind. He said, 'I love you,' and he went on to say, 'The One for whose sake I love you loves you.' He continued, 'If it had not been that the Messenger of Allah, may Allah bless him and grant him peace, said, "When a man has love for another man, he should tell him that he loves him," I would not have told you.'"  

عَنْ مُجَاهِدٍ قَالَ لَقِيَنِي رَجُلٌ مِنْ أَصْحَابِ النَّبِيِّ ﷺ فَأَخَذَ بِمَنْكِبِي مِنْ وَرَائِي قَالَ أَمَا إِنِّي أُحِبُّكَ قَالَ أَحَبَّكَ الَّذِي أَحْبَبْتَنِي لَهُ فَقَالَ لَوْلاَ أَنَّ رَسُولَ اللهِ ﷺ قَالَ إِذَا أَحَبَّ الرَّجُلُ الرَّجُلَ فَلْيُخْبِرْهُ أَنَّهُ أَحَبَّهُ مَا أَخْبَرْتُكَ قَالَ ثُمَّ أَخَذَ يَعْرِضُ عَلَيَّ الْخِطْبَةَ قَالَ أَمَا إِنَّ عِنْدَنَا جَارِيَةً أَمَا إِنَّهَا عَوْرَاءُ  

Anas reported that the Prophet, may Allah bless him and grant him peace, said, "When two men have love for one another, the better of them is the one who has the strongest love for his companion."  

قَالَ النَّبِيُّ ﷺ مَا تَحَابَّا الرَّجُلاَنِ إِلاَّ كَانَ أَفْضَلُهُمَا أَشَدَّهُمَا حُبًّا لِصَاحِبِهِ