Fairly sure he was just unsure whether or not you were suicidal, and was just saying that as a just in case thing.
That said, it's not like saying that helps much either when dealing with someone contemplating suicide.
My coworkers sent me wishing well messages. One of them was told I was out with the flu.... So I explained it wasn't the freaking flu but lower back pain. I wish it were the flu. Once lower back pain kicks in you can bet it will happen more often.