If we all have a "soulmate," why do I feel like I lost mine?

My friend died a month ago yesterday. I have been taking it harder than I know I should, but I can’t help myself. My friend was a totally different person. He had every single quality I was looking for in a guy, but before I got the courage to tell him “I love you” he died. I know it has only been a month, but I get upset when people say “you’re young, you’ll find someone else.” I notice guys, but at the end of the day I feel like I will be betraying my friend. I don’t like the idea of ever getting with someone else because they will never be my friend. They will never have all the qualities that my friend possessed. What do I do?