This is true, RnR - we will never know for certain.  Many people do not understand the close and loving relationships that develop among men (and/or women) who are in celibate, religious lives that is not sexual in nature or behavior.  I recall my grandfather telling me of a friend in WWII who was killed in action:  my grandpa told me of how much he loved his friend, relied on him, and how inseparable they were from the time they met.  In religious life, I know this experience as well with my now departed friend Fr. Richard.  Would I be buried with his remains?  No, not likely I would even think of it (till now), as we lived in community and not, as was the case for Newman and his friend Ambrose St. John, in retirement in a house together.  BTW - it was Pope Benedict XVI who ordered the two of them to be separated and Newman entombed elsewhere just before Newman was beatified.  Interesting, as Benedict emeritus now lives in a house with Abp. Ganswein.