أهلا شادية 您好
الصواب أن تقولي: هُوَ شَخْصٌ وَدُودٌ وَإِيجَابِيٌّ
أَمَّا بِشَأْنِ مَثَلٍ أَوْ قَوْلٍ عَرَبِيٍّ فِي الشَّخْصِيَّةِ الْإِيجَابِيَّةِ وَالطَّيِّبَةِ أَذْكُرُ لَكَ أَحَدِهَا :
"الْحُرَّ مَنْ رَاعَى وِدَادَ لَحْظَةٍ وَانْتَمَى لِمَنْ أَفَادَه لَفْظَةً"
a gentleman/noble man is who should be nice, kind, loyal, fair to whom are/were nice, kind to him (her) even for just a moment or taught him/her one word!
Hope you'd like this proverb which is for a famous scholar "Al-shafei -الشافعي -رحمه الله".