Is it normal if i'm lying about having a bf?

My bf and I have separated but it feels more like a break. Regardless, I'm single. However, whenever guys hit on me, I say I have a bf, happy and proud like I always have because thats how I felt about being with him. Maybe I'm in denial about not being with him anymore but I still feel taken by him, like my heart belongs to him so I'm just taken. There's really no one Im interested in getting involved with because there's only one person for me. Maybe until someone who gives me the same feelings as he did or more, then maybe I'll be honest and say Im single but I really doubt theres someone else who will give me those feelings especially for me. Ive never been the vulnerable type until I met him. Everyone who knows me well thought I was a different person because of how soft and loving and open minded I had become. So I just feel better saying "Im taken" because I dont wanna be with anyone else and I truly feel like we're meant to be, just not right now.