Basically, I was lead to believe someone was single at work when they flirted with me. Since found out has a live-in partner but still wants to flirt/get attention for ego boost from me. If I ignore them they keep trying to bring me into conversations by mentioning my name and/or asking me questions such as "oh I bet mistletoeholly had a good weekend?"
I am trying to get over this person and crush on them. However, I don't want to be completely rude and cause trouble for myself at work. How do I subtly get them to leave me alone or just not try to engage me while I work on getting over it?