you dont ask them whats wrong just make them some food or go to the store for her shes just gonna tell you she's fine i've learned this from my new gf ^^ they dont want there bf to know whats wrong with them but let me tell you WE KNOW WHEN A GIRL IS IN A BAD MOOD NO MATTER HOW HARD YOU TRY TO HIDE THEM we pay attention to that stuff a lot to the girls that have a bf once we see your in a bad mood WE HATE IT CUZ WE DON'T EVEN UNDERSTAND WHY YOUR MAD IN THE FIRST DAMN PLACE