Everyone deserves for someone to think they are 'awesome - pretty & amazing & to be told that they are loved'! I'm not a big fan of playing relationship games - so I would follow my heart. She may not be ready to say those 3 words

Maybe something in her past is making her hesitant - just try to be patient as long as she is showing that she cares about you in other ways. I like Wildcat's advice to try to find other positive things to occupy your time.
Just for the record - my husband told me that he loved me before I fell in love with him! I knew that I really liked him - but for some reason I hadn't really thought about it that deeply. I told him that I really cared for him - but I didn't want to say that I loved him until I felt it deep in my heart. I remember that night after the first time he said that - I went home & decided that I wanted to give him 100% of my attention. And after I let my guard down - I fell deeply in love with him! And although we have our ups and downs - he is my best friend & we have been married for 8 years & have a precious little boy that's 3.
I told you all of that because I wanted you to know that it can work out - if it's meant to. So, continue being the sweet, attentive guy that you have always been & show her that you love her instead of using those 3 words for a while.
Good Luck - and may God guide you to know what to say & do.