If a man wants to be attractive to a woman, and for her to be receptive to him, he won't catcall, grope, follow, or make uninvited suggestive remarks. Men know this - they're not (normally that) stupid - so when they do it, it's bullshit that they are 'just being friendly' or 'just making the first move', its harassing bullying behaviour designed to make them feel powerful. They do it because they don't respect women, not because they like them.
Of course men can talk to women... but they need to recognise their position of power and not exploit situations where they are vulnerable. They should never be suggestive or sexual unless a woman makes it clear that she is interested, and back off immediately if he has somehow misread the signals.