You've gotten some good advice here. I was just curiously reading till I got to the age thing, too. This will likely be a long post because I use lots of words
I don't know where you fall as far as religion goes, and that is not what I want to talk about. However, I led a 3 month study on dating and relationships at my church last year and a couple of highlights came out of that. So if you can get past the stereotype for just a sec, I want to give you a couple of things to think about.
People from 16 to 22, 25 are all worried about relationships and look at most relationships as so important, and with permanence, at least for now. High school yearbooks and college-kid facebook postings are full of "don't ever change" and "friends forever" epithets but permanence in any relationship is something that takes time and effort to develop, and isn't something that usually happens by chance. The guy that watched his now-wife for a number of years was smart, and wise.
At 21, you need to ask yourself some serious questions. I wish I did.
1] Why do you feel you can be the rescuer of this girl? No person on earth can make another person change irregardless of their value as a person or the good-heartedness of the rescuer. Don't mean to be harsh, but don't commit your life to someone who is not already where she needs to be in life. I don't mean hold out for perfection either cuz that will
never happen. Time is on your side.
2] The job thing mentioned above: are you in a position to be very marketable as a potential to women in general? I am thinking of one guy I know now living with his parents, broke at age 30 because his fiance got sick of him when in the five years they lived together he never put his Master's degree to use and got a real job. And he
still hasn't figured it out! Works part-time at WalMart. As noted by others, men and women both are more attractive when they take care of themselves.
3] Then there's the whole enabler/co-dependent thing. If you don't know what this is, I hope you find out from reading a book and not from a recovery program. You may be a man, but both guys and women can get themselves into this cycle, and being a rescuer of a worthy "damsel" is often part of that. Trust me on this- I know a little about it. Dead-end street. There are noble things to do that make a difference but that ain't one of 'em.
4] You can create the circumstances to increase your chance for success in all areas of your life if you act on it today. Most people in their 20s are so caught up in living the moment that they don't make plans for the later (myself included in that). What do you envision making you happy at 30? Take that backwards, and in the midst of enjoying your youth now, start doing the things that will produce what you want when you are 30, otherwise, in ten years you will be so caught up just trying to make life work that you will miss out. I am 43 and just starting to achieve what I wanted at 30 because I didn't plan ahead and life (kids, bills, divorce, job) got in the way.
Hey, you don't know me but I want to assure you that I am not judging you, but
I have made some mistakes and let some of life pass by-
you don't have to. I may never have been Donald Trump but I hardly have the time now to do any of the things I did in my 20's, and would love to do-over a little of my 20's to make today more satisfying. Just a little time and planning at your age would have been so easy to do, but making up for it at this stage of my life is complex, and hard.
Learn to be content and plan to be fulfilled- and love well, my friend.