Strong sexual tension is building between a coworker and I who’ve worked together for a year and we haven’t really noticed eachother until now.

I (26m) am in this strange situation where my coworker (f32) and I seemed to have built this crazy sexual tension out of nowhere. It's so weird because for the better part of the year it seemed as though she thought poorly of me like I was the village idiot or something. I've become close with a lot of my coworkers but her and I never really talked besides when It was absolutely necessary for work because I had always felt I had made her uncomfortable as if she saw me as some creep. But within the past two weeks all that has drastically changed. Idk if it has to do with me getting a haircut or possibly the subtle sexual energy I'm exuding since I've been on nofap for the last 20 days, but now she literally gravitates towards where I'm at and lingers in my personal space to the point where it would make most people uncomfortable.. While most of the time we keep this awkward silence between us, she's kinda started teasing me in a flirtatious way when there's errors in my work (or that was caused by someone else but I still am blamed for! Lol). She's become way nicer than before, she doesn't turn me down when I ask her to do something for me like everyone else there does, and actually accepts things I offer her whereas before she'd give me the generic "no I'm okay, thanks." The weirdest part about this is just how much its changed how much I notice her now.. She's attractive, dont get me wrong, but shes not someone I would've in a million years seen myself being interested in, but now she's constantly on my mind. and even though we both mostly seem too nervous around each other to talk, I can't help but feel absolutely intoxicated with those butterfly feelings when I'm near her. And as uncomfortable as the awkwardness is, the fact that we both continue to stay right next to each other when there are other workstations we could go to to escape it, it seems to make the feelings even more intense. At the moment I'm just playing it off as if nothing is going on, and I have no idea what she is feeling or if me believing the feeling is mutual is just all in my head. It's a really strange situation that I've never been in before so I dont know where it's going to go from here. I'm keeping my expectations low since things like that dont usually work out in my favor. But man I just thought I would share this because I dont think you see that many instances where someone who intially wouldnt even consider being friends with you now seems to possibly want something more.