Still here? Wow you got guts fammo. I'm telling you, you might wanna turn back now before it's too late

You and Ria have been close friends ever since your dad and her mom, who have been friends since college, brought a house together to help eachother out financially exactly 1 year ago. At first you only saw her as a sister, and she felt the same way about you, seeing you as a brother. But somewhere in between the lines she started getting cute to you, and eventually you developed feelings for her. You've wanted to shoot your shot with her for the longest now, but you feel like if you ask her, because you are like a brother to her, she wont feel the same way, so you havent really bothered with it. However, the thought of her being taken gets you deep in your feelings and you dont want that to actually happen, so you know that you've got to tell her how you feel before it's too late. But that's alot easier said than done. Your self confidence is literally low asf, and you get too nervous whenever you actually have a legitimate chance. You know time is running out, but you still cant grow some balls and ask her.