In my honest opinion. Getting married, having a wedding, is so out of control these days!!!!
With shows like "Say Yes To The Dress" and spend more that we make in a year on SSDI on a dress and the stuff that goes with it or shows like "4 Weddings" where they spend well over a years salary for the normal person on a single day, just a few hours, then people expect anyone who gets married to be like that.
Go to a store and look at dresses. Go to resale shops, all sorts of places, see if a cousin or friend has one you love they'd let you borrow. Having one dry cleaned and boxed is about $100 - $200 nowadays if you look around.
You can buy your own artificial flowers at Hobby Lobby on sale if you look at hobbylobby.com and buy them the weeks they are on sale. You can buy a book in the wedding section that shows you step by step how to make bouquets and boutonnieres.
A friend of mine got married a few years ago and her hubby to be bought the book and sat every evening for a month making ALL the flowers. He thought it would be fun to learn how to do that so he did. Of course he took some apart and redid them but they were beautiful when the wedding happened.
If you decide you want a beach wedding or a barn wedding or a park wedding....they all can be free if you find the right spot and it's a public place. If you have a friend who has a great big back yard you can just borrow a bunch of chairs from church or something at no cost. Maybe one of your friends goes to a church that would let you use their chapel if you want a church wedding.
There are so many free ways to get married. It's not about a huge reception with a full dinner. It's about a man and woman standing in front of their friends and family making promises to each other to be faithful, respectful, and to work to remain in the relationship 100%+.
So, if you and he want to get married start with deciding the style. Is it a beach, a country club, a barn, a doggy park, etc...then find out where they will let you do the ceremony for free or at a minimal cost. Reserve the date once you have one.
Then start looking for a dress, or if you have already found one that's out of the way. Is he going to wear a suit, tux, a cowboy shirt, or a uniform? That's out of the way.
Pick your colors, make the flowers, put them in a box/tub on the top shelf of the closet, that's done for the day when it comes.
There, everything is done and all you have to do is decide the when. You have the dress in the closet in a long white bag to protect it, the flowers are done, the guy clothes are picked, what else is there....nothing that has to be any different.
A bridesmaid can wear her own dress that coordinates with your flowers. Done.
So don't put off getting married because you can't afford it, it can be done for less than $50 per month if you plan ahead and make stuff in advance. Even less if you don't want a lot of flowers that take time to make.
If you're just not ready then don't let anyone force you into a marriage. You're already together in all senses of that anyway.