Do you believe in platonic soulmates?

I met someone a while back and we have just clicked ridiculously well. We understand each other, share the same taste in music (a big thing for me) and opinions on the world, and I feel like he is everything I have been missing in my life. Recently he told me he felt like we were the same person and that made me think. There is nothing romantic between us, he's just genuinely the best person I've ever met. So I started wondering, is there such a thing as soulmates? What do you think??