So this guy that I see sometimes waves at me or says hi to me but doesn't really talk much after that. He talks to me online pretty smoothly but when face to face he's mute. One day I was struggling with my art supplies and he asked me if I needed help with that but stupid me said, "oh im fine but thank you..." when im nervous i make the wrong choices.... anyways... he then made a Facebook status comparing how he used to look before and after he worked out and I replied on his post saying " this is incredible! Good job pushing yourself to your goal." Then he replied back saying, "You're incredible! I'm not near my goal though." Yesterday we both attended a school event where we submitted our artwork and when he saw me he waved at me.Though when I complimented on his work, he just stared at me and he didn't even say thank you. Is this guy really nervous/shy around me or is he just playing around? Thank for you guys' time!