OP, me and my partner are the same age as you and your BF. We had the chance to live together at my parent's for 9 months before renting a place together, so we had an idea of what it would be like to live together 24/7. We were working, putting money aside and having to take care of the house along side my family. We were lucky to have that opportunity.

Now, we've been living in our place for 10months, paying our bills, working, figuring finance out, housekeeping task etc. And all of this is vastly different than when we were seeing each other every other weekend (we were 2h away from each other).

You can't marry someone you barely know, and to know someone, you have to live with them. That's the truth. Imagine you marry, you start to live together and then bam, realization : you can't stand each other on a daily basis.

You seem very rushed about the whole idea of marriage, it's not just a title, it has meaning if you truly love each other, and trust me, to love someone you have to know every aspect of their personality on a daily basis, the good and the bad. And even while loving someone, there's thing your dearest half will do that will annoy you, and you need to figure out if you're able to make it together despite YOUR goods and bads and HIS goods and bads.