I don't know what to title this

I'm engaged, but there's still one person I'm weak for other than my fiance. I love her and they both know. I avoid her so I don't do anything stupid. I really miss her. We were never even together really, we were there for each other at bad times in our lives and I fell for her. I've been trying to delete her on social media but it's hard to let go. And I don't want her to think she did anything wrong when she notices. I'm finally admitting this to myself and I feel horrible.