TS, follow n00b13's advice on the romancing part. However regardless of the outcome of that, I suggest you have a serious heart to heart talk with her. Get to know and understand how she's feeling and you tell her how her rejections make you feel. If she says something like "You did so much just for that?" you must let her know that you didn't do it just to get some action, but because you truly enjoy spending time with her and you really want to show her how much you love her.

Do you eat appetiser and main course FOR dessert? no, you eat those AND dessert completes the meal. Your intimacy for her is like the dessert. Get her to understand that you have your wants and needs too, and her rejection just makes you feel like she does not love you.

+1