I admit that I was jealous in the beginning since I'm older and my boyfriend and I just aren't there yet, and nor will we be for a while. However, I really put a lot of effort into dealing with these feelings and I've made peace with myself.
It took a while to figure out what was going on, but I now know that I don't feel that her fiance is ready. He's a great guy and great as a boyfriend, but I just don't feel he's right for the husband/father role (and they do plan on having children right away). He's 25 years old and has yet to hold a full-time job. He owns a business where he works from home and teaches businesses how to market themselves by using Facebook and Twitter profiles. He's been at it a year and has some clients here or there, but really doesn't bring home that much money. He frequently goes to his mother for financial support. My sister, on the other hand, has a great stable job and I know she'll be quite successful. I'm really worried for her that she will be the primary breadwinner and mother, while her future husband sits around at home all day and plays on social networking sites.
Read the rest over on Group Therapy.