I am a really nice guy. Everyone at my job agrees( even she does). They all say I am one of the nicest guys they know and I am very funny. So I can't help, but ask the question, am I too nice for my own good? I mean when I go to get something from the vending machine I ask them if they want anything and if they do I pay for it. I stay after my shift ends and walk them to their cars. But, am I doomed forever due to my personality?
But not humble.
Surprise kiss? Please don't.
Necklace? Really? Firstly, it's a bit weird if she doesn't like you that way.
Secondly, if this breakup happened last week or something, it's too soon for her. It doesn't matter if she broke up with him.
I think it's all a bit too over-the-top unless she has given you hints that she's interested in you, but feel free to disagree.