Good song to explain to him how I feel?

So I knew a guy at my school for about a year and he left the school
last week when we broke up for the summer.
I've really liked him since I first met him but he lives in russia and
is going to board at his new school in london. I told him how I felt
when I said good bye to him and he tole me that he loved me so much
but there wasn't anything we could do about it now because he had to
go :(

We still talk on facebook and stuff but I want to know of a song that
can explain how much I love him and miss him.. Anyone know anysongs
that I could use..?
Many thanks :)