Relationship probs!! help please!!!?

Ok. Me and my gf have been dating for almost 8 months now. its been a little rocky here latley and its mainly my fault. this is her first real relationship. she says she dosent know if she realy loves me anymore. She also says that she wants to c other ppl just to know wat its like. she says she dosent know if shes in love or if this is just how your supose to feel in a relationship. Please you guys. i love this girl to death and i want to make her happy. i dont know wat to do anymmore. o and btw, she says she wants to know wat its like to date others, but she said shes not gonna.