Friendship issues

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So ive been close friends with this girl from work and at first i wanted to date her but she disclosed to me the first time we hung out she was in a LDR. Which was fine at first and since then we have hung out a bunch of times together. she texts me every day or calls to talk to me about things going on in her life and make plans to hang as we always have great times hanging out.

Lately though i've found that i have been still trying to get with her on some weird emotional level, and acting as if we were in a relationship and ive been too pushy/weird towards and around her and i cannot stand doing that to her as i'd rather us be JUST friends but i find myself very attracted to her no matter what i do. Every conversation is awkward over the phone as she is openly communicative which keeps me on my toes most of the time and it makes for really awkward talks. I enjoy being with her in person and texting her but over the phone? yikes. somebody slap me man. seriously wtf
Ive tried to stop myself from feeling that way towards her and just stay friends but i just get more frustrated and I dont want to ruin or lose the friendship, by disclosing these feelings and have her weirded/put off out by it. Id rather just stay friends and have her in my life and NOT have romantic/sexual interests going on in the back of my mind.

How can i force myself to not have this type of interest in her?
like just see her as a friend and nothing more than what it is?
Should i forget about her for a while to clear my head?
Ive never had this type of issue with other girls or friends who ive been seeing and its been bothering me so much that im starting to see its weirding her out and i end up hating myself for doing that to her...then again i have avpd and somewhat severe social anxiety so i don't know how to handle this situation. I dont have much close friends like her irl so i just need any bit of advice i can get to sort this out