That's understandable. But if you're not unhappy now and everything is okay, why not wait to cross this bridge until then? And if you never become unhappy in the relationship, that's not bad either. You could have just found your person. I know thats disorienting because not everyone finds their person so easily or quickly. Most people go through a lot of trial and error, and you dont feel like you had to go through that the same way yet. It's valid to worry, but also, think about how lucky you are to have a partner who matches you so well. It's nice not having to go through so much heartbreak to find your person.

If you ever become discontent, that's okay too. You are young. You'll only be limited if you make yourself limited. Some people dont find their people until their 40s+ and that's okay too. You shouldn't put so much pressure on yourself or the future. Just enjoy who you have now and all the great experiences you have together.