A Dog And Fleas/Friendship

Friendship means a lot to me, its like a dog with a flea
The longer u leave it there the more u get and the harder to get rid of the first
Sure some might leave but the best ones will always be there
They might get irritating and make u want to scratch till they go away
U cant keep ur mind off of anything but that itch
When the best ones die they leave the itch on ur body that u cant get rid of no matter how hard u try