Love letters

My sister found a box of love letters my papa wrote when he was in the Naval base and my nana was living in Canada. I'm overwhelmed by it all. She said there were 15 total (and probably more.)

"Endless is time without you....I left the station and was tired when I reached the car.
You took my strength and my heart with you.
I want to be your husband and love you for the rest of my life." 

60+ years of love is hard to wrap my head around.