This guy at work got my number about 2 weeks ago. He text me and we talked a lot for 2 days. Then it went to him initiating a conversation only to not respond back until the next day at around the same time for a few days then he just completely ghosted. At work he waves when I pass, and has even came up to me a few times to have a quick small talk as if nothing. Is he playing games? Not into me? Perhaps trying to avoid an awkward situation?