Girl wants to hang out with me but has a boyfriend?

I met this girl from work and we have hit it off pretty well. She asked me to hang out with her. We ended up going to an italian restaurant together. Just the two of us. There was some slight flirtation going on such as touching hands. She was very dressed up.

During dinner she mentioned to me that she has a boyfriend. Finding this out made me bummed out. After hanging out with her I decided to not really go out of my way to speak with her. For the last month she has been texting me and has told me how much she enjoys spending time with me. She recently has asked to hang out with me again.

I feel a strong connection with this girl. I am wondering whether I should just be a platonic friend to her since we enjoy each others company (Could put me in the friendszone) or If I should keep her at an arms distance with her and ask her out if she and I happen to be single in the future.
Girl wants to hang out with me but has a boyfriend?
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