human
What's wrong with telling women you don't know that you find them sexy and attractive?
assistant
Not only that, but do it right when you meet them. Don't just say it after some one-on-one conversation, as that's a social etiquette faux-pas and isn't appropriate, and certainly not at all flattering to the person you're speaking to. Don't pressure women. Ask them out on a date first, show them you have a genuine interest in them as a person and not just their physical features. Don't be crass or rude. Don't assume they're open to dating you, or that they'll be receptive to your interest in them. Ask for consent. Be polite.