Breakups

Is it wrong to stay hopeful that my boyfriend and I might get back together? Or is it bad to keep thinking that way. He just broke up with me a little more than a day ago and I'm taking it really hard. I feel so lost. I've had boyfriends in the past but this is so different. We dated for a year and I really need any advice I can receive on how to cope with this. I have no contacted him yet- but I want to but don't know when the right time is to also.