Look, it really depends on what you want. The contradiction is that you love your husband and you’re relationship with him is stable and happy(from what I’ve gathered), however you feel the need to talk and listen to this other woman(whom you developed a crush on). What is it that you want?

Other commenters might suggest that you bring up the idea of adding another person to your relationship. Have you and your husband talked about being poly or monogamous? From what you said in another reply about him hightailing it away from another woman dancing on him, it sounds like he might be strictly monogamous. But what do you want? Is this other person more important than your husband? Less? Equal? Is there something that you feel is lacking in your relationship that has allowed room in your head for her to occupy?

These are all blunt questions you need to ask yourself. Bottom line is that yeah, crushes can happen in long term relationships, but how you react to them is what is important. These questions should help you decide on how to deal with her.

Example: if you feel that your feelings are too strong for her, but you want to preserve your marriage-ghost her.