A few things my daughter will know about men:

• They make mistakes. Real men will do their best to correct them. Real men also say, "I'm sorry."
• Not all men give up when situations are difficult. A man worthy of your time definitely won't. 
• The best men will not take your shit. They will also understand when something is important to you and will strive to understand why, even if it seems like you're just throwing them said shit.
• They will open your door. Not because they think you need them to do so, but because they want to show you that they treasure you and want to do nice things.