I have a gf for 7 months( i'm 18 and she's 16) and there's a thing which concerns me a little bit. She has a class mate who is now in the hospital for 2 weeks and around this time she told me he called her about 3 times and i didn't react upset or jealous cause i know this isn't good but i don't like it and i don't know what to do/ what to say to her. Guys, how should i react in this case? PS: she isn't cheating, i know AWALT but in this situaton i'm 100% sure