How hard is it to just be yourself... You don't need to be a completely different person just to make her "love" you, that's just wrong. If she doesn't "love" you the way you are now she isn't for you.
Tell her you would like for her to have your soul because you trust that she will keep it safe.
But be warned, that means you absolutely have to be with her forever. I actually did this but now my ex won't give it back so I have no soul.
Just be yourself and she'll either like you or she won't. You can't [i]make[/i] her love you though. I mean, you can try and be something you're not, but then she won't actually love you, but who you're pretending to be and eventually she will realize that's not who you really are and that will just blow up in your face at the point.
If anything, just treat her nice (don't be an ass), but don't overdue it to the point where you're smothering her, that puts off girls a lot of the time. Also, try to get her to laugh if you're good with jokes or know some funny stories, girls like a man that can make them laugh. Otherwise just spend time with her and have fun.