Guys, if you go out of your way to help a woman and she thanks you in a text what is the "true" meaning behind "no problem" if you would?

I understand the general concept - I had no issues doing this for you. But I guess I am asking do you respond "no problem" versus a more formal "you're welcome" with a woman you are interested in, see as a friend or just as an associate.
No problem - directed at woman interested in
No problem - directed at woman you see as a friend
No problem - directed at woman you see as an associate (not even a friend)
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Guys, if you go out of your way to help a woman and she thanks you in a text what is the "true" meaning behind "no problem" if you would?
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