He's a very patient person and quite stable emotionally, so I never get tired of being around him.
ーHe's a very patient person and quite stable emotionally, so I never get tired of being around him.
「彼はとても気が長くて、すごく情緒が安定しているので、一緒にいても疲れることがない」
patient で「気が長い」
stable emotionally で「情緒が安定した」
これと全く逆のことを言うなら、次のようになります。
ーHe's a very impatient person and quite unstable emotionally, so I get tired of being with him rather quickly.
「彼はともて気が短く、すごく情緒が不安定なので、彼といるとすぐに疲れてしまう」
impatient で「気が短い」
unstable emotionally で「情緒が不安定な」
ご参考まで!