What should I must do.. Love advice ??

So I have this female friend whom I’ve started loving and I’ve also confessed my love for her .she says that she has never seen me that way and she thinks me of as just a friend . But she cares a lot about me and there are things that make me feel that she loves me but then she says she doesn’t love me . There is also this other guy who loves her and she takes care of his feelings too but she once told me that she does not love her . I am in a very tricky situation … She’s my only confidante and I dont want to lose her but at the same time I want that she should love me… It kills me when I see her talkin to that guy and doing all those things with him that she does with me … Though she’s a very nice girl but still sometimes I feel that she’s playing with my heart and loves that guy only even though she gives most of her time to me . what should I must do …should I must move on .. I would have moved on but my heart doesn’t let me ..it thinks that she loves me and I keep hopin that she would say it some day … Btw she’s very shy kind of girl and says that she hasn’t loved anyone in her life … She has a problem expressing her feelings and speaking her heart out … Thats why I keep hopin .. Help !