Yes, love resides in actions as well as words. And there's a sense inwhich the words are sometimes devalued by casual use, you know, people saying" I love you" as a sort of bargaining counter or a means of trying to tie someone down. Ennis and Jack didn't need that, and I think after the SNIT and the reunion kisses they never needed to say what was so patently obvious. theris was a love which,in Shakespeare's words, " bears it out even to the edge of doom", and doesn't need affirmation in words.
That said, Patriot 1, I wish I could say "I love you" to you; I feel a sense of love for everyone on these forums, because we all have something in common, no, not just an obsession with BBM but a basic humanity.