I'm soo stressed about this!!?

On top of his mother dieing...guys (this Has Been proved btw) have a sort of psm...ALL the time, we get mood swings ect, plus he could be nervous around you, or maybe you remind him of his mum, or maybe hes putting on a happy face for everyone else cause he doesnt want them to worry, dont stress it and next time you see him, ask him straight up if hes ok and if he has feelings for you, the best thing to do in ANY kind of issue is to talk about it...everyone will tell you this, But take it from a 16 year old (the sterotype for my age group is to be horny little Crap heads right?) talking is the more important tool for any relationship, be it blooming, or already an open relationship. TALKING is the key to success