If your having a great time with her, who cares what they say? Their only trying to bring you down from cloud 9. Im sure she is perfectly normal. Just be aware that EVERY woman gets emotional sometimes, and if she does for some reason down the road, be nice as can be as long as she doesn't make a habit out of it. Us women are sensitive, so be sure you NEVER call her bipolar or even ask about it. My friends say Im to crazy to every be in a relationship (bipolar, angry, psycho) but they don't actually know me in a relationship. What others perceive her as is not what you will. Your her boyfriend, not her classmate or friend. Don't listen to what they say, because your the only one who Truly knows. Don't give up on her (a mistake i have made before in my last relationship) just because people talk. You will regret not finding out what could have been.
-KatieBug :) -Remember that it can be hard to ignor the comments people make. Stay strong! :))