How do Portuguese men treat English girls?

Answer 1

1. Generalizing "Portuguese men" as though they're all the same is a faux-pas. No two persons are the same between themselves, no two men treat a woman the same, regardless where they come from. It's very subjective to what man you're referring to, specifically.
2. It's also very dependant on the English girl in question. A typical, normal man will treat a horrible woman in a horrible way and a nice woman in a nice way.
3. It's also very dependant on the circumstances and setting (i.e. in what context is this question made: romantically, friendships, trivial professional interactions, etc.)

In short, a Portuguese man will treat an English (or any other) girl the way he, individually wants to, based on who the girl is and what the context is.