is she playing with me?

i proposed her and she said that she loves me . but when i talk to other girls she thinks that i am having some relationship with them also .and she stops talking to me . i just want to know whether she loves me wholeheartedly or she is just playing with me? i really like her....she is really loving girl . i do not want to lose her . please help me... i am as the same age as she is....