You may come across someone who's good with you more than I do in the future. Now I feel that I am not suitable for you because I am just an ordinary woman. Does not look good, and not rich.
You may meet someone with you over my future. Now I feel I do not fit you. I was just an ordinary woman, not rich does not look good and is not perfect.
You may meet someone nice to you more than me in the future. Now I feel that I don't suit you. Because I am just an ordinary girl, not rich, not look good and not perfect.