We as women often try so hard to get his attention. We bend ourselves into a pretzel trying to please him. We make ourselves available to fit his schedule, we call him when we haven't heard from him. We actually start behaving like a wife long before the ring is on our finger. If you are doing this, that ring won't ever be on your finger. Being clingy, depending on your him for your validation will only cause your guy to ignore you more.
Men really do like to feel they have the woman that not every guy could get. He likes knowing he had to work for her. If your guy is ignoring you, he doesn't place value on you. A girl a guy sees as valuable is one he had to work for, not one that is always available to him.
If your guy ignores you, don't push him. No amount of talking will do it. Talking about it, complaining that he isn't giving you attention actually pushes him away. Men don't respond to words, they respond to distance. If you distance yourself from him, mirror his behavior, he will start to sense that you are no longer making him a priority. It triggers in him that maybe he might have to start working to get your attention for a change.
Think about it. Why should you be the one doing all the work to make him happy. Wouldn't it feel nice to sit back and let him do the work to make you happy for a change. This really is the way it should be. If your guy is ignoring you, this is a sign something is seriously wrong.