Heth.....not having been asked is your main 'problem'........you could always do the asking

.
The excuse that getting married it about money is daft.
If you wanted to be married then you would be. You don't have to spend a lot to get married. If you want the big'Princess' style day....then yes, that is expensive.
You could always save up if that is what you wanted to do.....or you could have a small family centred ceremony which costs far less.
I have been married for 45 years.........The wedding cost 17shillings and sixpence(registry office)....the taxi fare to Haslingden(we caught the bus back)......My outfit was bought at C&A and the whole thing including underwear cost £12.
Someone gave us a bottle of Sparkling wine....our wedding feast consisted of cheese butties, battenburg cake and a glass of the sparkling stuff.
The suit I wore many times.
Being married isn't about the showy do....it is all about how you feel about one another and being committed to someone for the rest of your life.
Please don't think I am getting at you........I'm not. I'm just saying that if you both
wanted to be married then you would/could and should do it.