What does it mean when a guy says this?

I've been talking to him for a few months. He seemed fine last time I talked to him.

“hey Melissa, I took the rest of the week off work. I have been isolating myself, I’m not really doing too good mentally to be honest with you. I just wanted to let you know so you don’t think I’m ignoring you.”

What does it mean when a guy says this?
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