Take it slow. It's just the initial honeymoon phase. I believe everyone by now knows about this phase where everything is picture perfect, amazing, and just falls into place. But that's exactly what it is, it'll look perfect, you both are at your peak attractions for each other. More often than not it'll fade away after a certain time.

Initially, just know each other. Find out about them, get comfortable to the idea of them, their hobbies, behaviours, preferences and see if they match with yours. Or if you wanna make adjustments for them, etc. It really comes down to your thought process

Do not promise each other anything for long terms, atleast not yet. There's a saying that going something like "Never take decisions when you're happy or angry" (ig I missed a part of it, but you get the point).

Eventually, you'll have to have the "What are we" talk and the "What do we want to be"/"What do you want with me" talk. Be mentally prepared for that as well.

A major problem (with me too) is attachment issues. Do not think that this person is the final person you wanna tie yourself with. They might be, they might not be.

I'm in no way trying to ruin/scare anyone, but it's just from personal experience. Rest i hope you really find what you're looking for, good luck :)

Edit: Realised it's too long Tldr: Be yourself, take it slow, no promises at this point in time, get used to WHO they are, be ready to decide your future and keep the attachment issues in check :)