Ginger,
Take a breather, take care of yourself. Of course you still feel like you need him right now--it is still raw and new. It WILL get better. And new things WILL come along.
I was involved with an addict with depression about 10 yrs ago...and I thought everything you thought, and felt everything you felt. When we broke up (he did the breaking up), I thought I couldn't go on. But I did. It was painful, difficult, and sad, but I did...and now I am much better off for it.
I'm not saying this is what you should do in your situation--everyone is different and this was my own personal experience--but I hope you'll take a break, a breather, process what you're feeling, and do what's best for you.
I personally think there are many, many people out there with whom we have the capability and potential to connect on deeper levels...just my $0.02.
Wishing you good thoughts and hugs.