I like my best friend but I don't know what to do

Hey everyone! I'm going to keep my identity private, but you can call me V, I use any pronouns :) Sorry if my english is bad! It's not my first language

First of all, we live in different provinces so we only talk virtually, but we've been best friends for like 8 years. I've been in love with my best friend for years, it stopped for a while because we distanced ourselves for a couple years (I didn't have internet access) but these feelings came back as soon as I started talking to them again

I've already confessed once the last year, it went pretty well! In fact, we both had feelings for each other but we didn't end up in anything because neither of us were sure if these feelings were platonic or romantic, but now I really feel that my side is romantic... I don't know what to do, I'm not sure but I think that they're interested in other person (Actually that person is interested in them, but I don't know if they feel the same, I'm just getting prepared for the feelings lol) I'm so happy for them but at the same time I feel really sad. I want to tell them how I feel, but at the same time... I'm scared

I'm scared of screwing up and making the uncomfortable, or ruining our friendship. I don't know if they will like the idea of having a relationship were you don't even get to see your partner, a relationship were you only see them when they travel once a while. I don't even know if they still feel the same...

We've been planning to travel with them and other friend, but I don't know how long it will take to do that.

Today I started taking a break from social media because not only these feelings but also other things in my life have been overwhelming me, my birthday is in 3 days (please do not congratulate me in advance, it gives me a bad omen lol) and I'm feeling really bad, I just want to feel better before I make any move, if I should...