jealousy

Me and my boyfriend have a very honest relationship, but he's just so attractive. These girls always say "your boyfriend is soooooo hot" and stuff, but they say it to my face. And it makes me mad. Is that bad? Like it could be my best friend and I still get mad. And all of these girls are always saying stuff about how he does certain things, but they tell me it like he's flirting with them, just to start drama. But I know he's 100% committed. Is it normal to be this crazy and jealous of other girls?