Jelous for no real reason?

my boyfriends best mate just recently got this girlfriend right? her dads a cop and she gets away with heaps and she is filthy rich and gets a knew phone and car every few months and she parties heaps (i dont cos im 17) and shes realy out there and interseting and it s***ts me to say the least not to mention the fact that she huged my otherhalf the second time they met. me and my bf's best mate were jst sitting there doing sweet f a , while my bf and his new gf were sending eachother songs on the fones and joking and laughing wih eachother. not to mention the fact that they get along reealy well and when his mate and his gf left to go home finaly at 3 o clock in the morning my bf would not shut up about her for days after woulds. just like the first time when she came over. shes also extremly loud and opinionated am i just 'over reacting' or am i jelous or what?! i just dont like he way she acts around my boyriend is that wrong or stupid?