I think my crush has turned to obsession

I’m in need of some help/advice. There is this girl I work with. We were pretty good work friends for a while, and then I started gaining attraction to her. I had a crush on her! We decided to start a Snapchat streak and I was happy that my crush wanted to interact with me. This went on for a good while and I think I’ve now realized that this crush has turned into an obsession. First of all she leaves me on delivered for 24 hours but her snap score keeps going up in that time. She’s also, active on social media while I’m on delivered but never opens the snap. For most people that would tell them that she has no interest in interacting with them, never did, and they need to move on, so they do. For me, I can’t get over it, it makes me angry that she does that. Also, I find myself constantly visiting her social media. I visit her TikTok multiple times a day to see what she’s reposting. I get jealous whenever her reposts references a past relationship. I’m constantly checking her Snapchat to see how much her score has gone up since my message was delivered. I’m always scrolling through her Facebook photos and I just can’t stop thinking about her. I’m always thinking about what she’s doing, who’s she talking to or spending time with, if she’s being sexually active, imagining scenarios with her in my head. why she doesn’t ever want to talk to me, It’s disgusting behavior.

I’m afraid if this goes on much longer it’s just going to turn into stalking and I don’t want that!

I’m aware that this is definitely an obsession and I need to stop. I just don’t know how. Any advice would be welcome at this point.