Girl is choosing between me and another guy help?

this girl i like is choosing between me and another guy she cares about me and says she wants to see what develops between us more bc she just doesnt know but she also wants to see what develops with him we all work together she is a cashier im a bagger/cashier/self checkout attendant and he is a bagger we both went to each others proms and she doesnt talk with him much bc he wont text her back bc he is scared of me her mom already loves and doesnt really knnow him she says she just needs some time but i dont know how long to wait for help im so confused