Can someone be your soulmate, but not someone you're in love with?

I asked my friend if she thought she would ever get back together with her ex (of 7 years). They’re the best of friends to this day, and she’s very close to his family (he’s not as close to hers). Her answer was that though he is her soulmate, there’s nothing there. Please share your thoughts w/me on this one b/c I am wicked confused!