need advice

Soo I have have a massive crush on this guy... and he is really sweet and has a really good personality.. and we have been talking for a month so we've had a "thing" as people call it but lately he hasn't been talking to me at all during the day, like I don't expect him to talk to me 24/7 but if he likes me like he has said he does I would expect him to speak to me not leave me for 3 days wondering what has happened...