This is a letter to his immortal beloved...or otherwise his soulmate the one love he'll always love.
He states that no one's heart will be truer to hers other than his own.
Only he will love her always.
He regrets being so far from her but distance doesn't keep his thoughts away.
He only feels happy with her and in her arms.
So happy in fact that his soul only belongs there.
And with this letter he is that much closer to her.
He talks about one day being with her solely.
Living with her and being lovers.
Until then stay calm he says.
She is his live his love.
And never misjudge...never believe false tales and rumors...of the one man who loves you so unconditionally.
He is ever hers as she is ever his...they are ever one.