How am I supposed to reply to this?

I've been chatting to a guy I met on Facebook some days ago and I told him bye because I was getting out of the house to meet someone.Right after that he said bye and also that "you know, I'd like to meet you for coffee some time"

It's been 2 days and I didn't say anything because I didn't want to send him an offline message, but now that I think about it, it doesn't matter anymore.What should I reply to him?

PS: We get along great as friends, laugh all the time, even heard his voice through the cellphone, so he's legit, not a pedophile. But I don't know if I want anything more than friends.I don't feel the sparkles yet.

Thank you! :)