Haha!

When you delighted , I'll be with you.

When you sadness , I'll listen to you.

When you busied , I'll stand by at behind.

When you annoyed , I'll give you fresh air.

When you need me , I'll pop up in your mind.

When you angry , I'll make reflection with myself.

When you ... ... , I'll ... ...

When you delighted ,sadness ,busied ,annoyed ,angry...
You can watch our memories.