You do not need to fix me a plate.. in fact if you asked i probably say no thank you. but i would thank your for asking..
I like to get things for my guy. If he says he is thirsty or hungry I will get him something. I often am proactive and ask him if there is anything he wants.
He does the same for me.
On the other hand if some strange women started handing him plates of food I would be highly annoyed. I might even become miffed and slightly peeved.
A gentle and genteel warning would be issued.