@Alien, you can't call a stranger "mój kochany". Especially if you're a guy and you want to address another guy like that lol
Do you think this femail (and maybe other people) would get the impression that the male--maybe hypothetical--was trying to be romantic?
Yes.
Some things I've overheard guys use as flirting include 'malpiszon' (monkey) 'mała' (little thing/baby) or my favorite 'cwana bestia' (cunning beast)
"Małpiszon" definitely isn't common and sounds more like an inside joke between people who know each other well. I wouldn't risk it with someone you don't know too well ;) "Mała" can be a bit cringeworthy (it's like "babe"), it's usually associated with simpletons who listen to Disco Polo or sth like that, I think. I actually wouldn't discard "śliczna", as in: "Cześć, śliczna!", for example. I'd prefer to be called "śliczna" than "mała" (as I already wrote, "mała" is a bit lame, unless among teenagers or maybe people in their early 20s?).
If--maybe hypothetically--if I'm the male in question.
Why so mysterious? You're anonymous here, so you can be honest with us. If you tell us what you want exactly we may be able to help you then.
@Joker, I agree, women aren't "typically" attracted to physically abusive men lol They are likely to be attracted to men who are able to protect themselves and their family. That doesn't mean throwing themselves at everyone in sight, picking fights, trashing everything around them or beating the crap out of your wife because the soup was "too salty". That means that the guy has the physical strength and the mental abilty to use it in a dangerous situation (i.e. he can spark some agression in himself when needs be).