<human>: This guy was my weed dealer for a while. We became decent friends. He wanted to date me. I said no.

He told me he decided to quit selling for good, but pretty much stopped selling only to me. I stopped contacting him because I knew he had romantic feelings I couldn't reciprocate, and the friendship fizzled out. I forgot about it.

5 months later he hits me up on FB says "Hi, it's been some time! Do you want to hang out and catch up".

I have ignored the message for 10 days but he is obviously notified I have read it. Do I reply?

Any advice would be appreciated.

Can you succinctly summarize the text in 1-3 sentences?
<bot>: Guy liked me, I didn't want to date him, friendship fizzled out. 5 months later he says hi. I feel bad just ignoring him. What do I say?