Imaginary Friends

hi friends,
This is just a random thought i would like to share with you,

how many of you had imaginary friends when kids??.Many of them could be still friends, you talk to them when alone, you play with them and do everything with them that you would do with a real friend.

But one of my friends says:

"there is one more type of imaginary friends that we all have. Strange but true.They are the one that really exists and you imagine them as your friends but they are just pretending. (Fortunately I have not came across any of them yet..... at least I think so). But there could be many of them whom you could rely on but were not there for you when you needed them"

Are they your imaginary friends??