Moving in together

We are moving out of our family homes after five years of dating. I signed the lease and can’t stop crying. I’m reading all this negative stuff online about how it kills the romance and ruins the relationship…. We have a great fun relationship and have such funny times together. I am so scared of ruining that. I see 10x more negative stuff than I see positive online and it’s making me so upset.

I keep feeling like if it doesn’t work out, it means automatic breakup. And that thought makes me cry so hard.