coccinelle, four and a half months is absolutely no time at all in coming to terms with your loss. in my experience it takes at least two years to begin to feel anything like 'moving on', or to be able to really allow yourself to think about the person without feeling a huge sense of loss. everyone is different and deals with death in their own way and although people can empathise with you, they really don't know how you feel unless they too have experienced the death of someone so close. you have to do this in your own time, in your own way, there's no easy way to 'snap out of it', it just has to be lived through.
cry when you need to, don't bottle it up or feel as if you shouldn't because other people tell you you should be 'getting over it'. one of these days, somewhere down this road you're on, you'll wake up one morning and it won't be the first thing you think about, you'll be able to remember your husband and smile instead of just remembering the grief.
xxx