What does he mean?

Ex and I broke up three days ago, and I’m doing the no contact. He just texted saying, “I know I need to come get my clothes.”
I don’t want to respond because I really don’t know what he actually means. Is it suppose to be, “I know.” With a period after the “know” or? Is he trying to get me to reply back or he’s just reminding me that he needs to get his stuff.
What does he mean?
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