4) The phrase "We need to talk"
Rarely is this phrase used and resulted in a casual conversation with no long-term implications. Maybe is has but in a man's mind it's going to result in a sit down to discuss something he is doing wrong. "We need to talk" is often also accompanied by a morbid passage of time where they guy has to roll back in time to figure out what it could possibly be about. It's better to accompany the phrase with a brief preview of what the talk will be about to reduce the anxiety level. Try "We need to talk about what happened last Saturday" or "When you have time can we chat about you running naked in the mall."
5) Saying "I love you" prematurely or all the time.
You shouldn't be in love with anybody after two weeks and you definitely shouldn't be in love with someone after two hours. If you think you are, feel free to keep it to yourself. To a guy, really strong feelings early on are signs that you might be the insane, overly passionate type. The type that might drug him and tie the both of you to train tracks in front of a speeding train just so that the two of you can be together forever. A guy is also afraid you will say, "I love you" around his boys because he is obligated to answer. The outcome will be a thunderstorm of ridicule from his boys once the girl leaves. Girls might say, "if he loves you he shouldn't care." But why make him go through such a thing? A guy also shouldn't have to tell you he loves you 10,000 times a day in 47 different languages. It will become mindless repetition and a form of torture I'd wish upon no man. If he say he loves you once in a while and acts like it all the time that should be enough.
6) Excessive phone calls or texting.
It can be frightening to look at your phone and see that you missed 230 calls and 4,500 textse during your 10 minute shower. It suggests that the girl is either insecure or has an unhealthy obsession with you. Obsessions are scary because obsessed people are capable of anything. Romeo and Juliet is based on two young people obsessed with each other and look how that turned out. If you call and someone doesn't not pick up, feel free to try once or twice more in case they didn't hear the ringer, then leave one voice message or send one text message like a normal person. They will call you back as soon as they can. Don't make a person pick up a call just to stop your continuously barrage of calls. They will invariably not be happy to speak to you.
7) Profound, hormonally induced mood swings.
It's a simple matter of men failing to understand the mechanisms or reasons behind such things. Men can cope with a slow but consistent assent into a different mood. In fact, they can have the chance to stop whatever it is that they are doing before it gets to the point of no return. Mood swings are abrupt and insurmountable, more like being on a flat road and smacking straight into a mountain that appeared instantaneous with no warning. To go from happy and cheerful to livid and homicidal in space of five minutes is very scary. Those are the kinds of situations that result in her punching you in the throat, hitting you over the head with frying pan or "accidentally" lighting you on fire.