Best friend vs boyfriend?

I am in high school and my guy best friend and I dated the very beginning of 8th grade. We broke up after about a month and a half and things were SUPER confusing after that. We would both go through stages of liking each other and almost dating but it never happened. My girl bestie from childhood does not go to the same school as us but recently I introduced them. And of course now the guy thinks he is in love with her and she has a crush on him… but neither of them know I’m still in love with him. Don’t get me wrong I have had other crushes but nothing close to him and my heart always comes back to him. I want them both to be happy because they are my two favorite people. They know that I’m scared about them dating because I’m scared I will lose them but they don’t know the second half… so my question is… do I tell either of them or just keep my mouth shut and let it keep happening even though it breaks my heart? Keep in mind this boy and I fall asleep on ft with each other almost every night and we’ve been through hell and back and always come out closer. We tell each other everything. Same with the girl which is why I feel really bad hiding this but I feel like I shouldn’t tell them. I’ll get over him soon… right?

Updates
+1 y
Update: I told the girl that I still like him.. but not HOW MUCH. I just admitted that I still like him a little bit but I told her that it was going away and that they should date. Don’t ask my why I said that I just did. I want them both the to be happy. But she wasn’t mad and said that she kind of already knew. I just spent several hours on face time with both of them and the entire time my stomach felt like it was being ripped out.
Best friend vs boyfriend?
Post Opinion