One of my male friends and I who haven't seen each other for years caught up a few weeks ago, and he suggested that we meet more often considering how close we live now. I picked up flirting from him that day. The following week I messaged him asking him what he was doing for the weekend, mentioning that I wasn't busy the next couple of days but he didn't reply. The following weekend, today, he messaged me asking what I was doing tonight, I said I was relaxing at home and asked what he was doing, again he didn't reply. What is going on??