I'm in love with my best friend

So I'm now a senior in highschool and have been best friends with this girl since freshman year. I've been genuinely in love with her since sophomore year and I'm pretty sure at some point she's felt the same since she's bi and we've been in a lot of "intimate" situations. I don't mean anything sexual just a lot of cuddling (cliche I know 😞). My problem is that while it's clear that I'm terrified of opening up emotionally in that way I'm sure she is too. And she's so hot and cold with our closeness at this point it's been about three months since the last time we cuddled granted we both have jobs now and haven't had a full sleepover just us in a minute but either way I miss that. One of the last times we cuddled was when we went to the movies with our other best friend. We had our legs intertwined for almost the whole movie and she was playing with my fingers and any time I pulled away for even a second she'd bring me right back. That same night we went back to my house and she played with my hair until I almost fell asleep. I just miss our closeness and am unsure of what to do. We still call everyday and hangout almost every week it just seems like maybe she's not interested anymore if she ever was. She's also very inexperienced in relationships beyond middle school bfs/gfs. While I've had 2 past gfs and a couple (failed) talking stage one of whom just ended a few days ago in my attempt of moving on. The attempt as stated failed and I am still very much down bad for my best friend and I just need advice on what to do. Please help me 🙏🙏🙏