You seem like such a cheerful person. You must have grown up in a nice home.
You're such a lighthearted person. I think you must have been raised in a warm and loving home.
1) You seem like such a cheerful person. You must have grown up in a nice home.
「あなたはとても明るい人のようですね。良い家庭で育ったのでしょうね。」
2) You're such a lighthearted person. I think you must have been raised in a warm and loving home.
「あなたはとても陽気な人ですね。暖かい愛情いっぱいの家庭で育ったんでしょうね。
「明るい人」は a cheerful person や a lighthearted person と言えます。
「明るい家庭で育った」は you must have grown up in a nice home や you must have been raised in a warm and loving home などと言えると思います。