I hate it when I get left behind. I don't like it when people say hello and then goodbye the next day. I don't like the feeling of people coming and going. But the sad reality is, everyone will come and go in your life. It is rather unfortunate, but that is how life is. People can't stay beside you forever. At some point, you have to let go of them.
Sometimes I do suffer from what people call separation anxiety. I get easily attached to people that it breaks my heart when one or the other has to go. Saying goodbye isn't really my forte. But we have to accept that life will always be like this: a series of hellos and goodbyes. Goodbye doesn't really mean the ending or the closing of your relationship or of your life, it is just a signal that there is another hello that awaits you.