Molly Bloom
Men are needy. Period.
If you have a full and interesting life without your man, that will make you intriguing. It's something you should do anyway as men come and go (hopefully not) but you will be with YOU for the rest of your life.
So get busy with outside stuff, friends, education, exercise. If you appear to be sitting around waiting for the call, and you haven't been doing much of anything, then that wouldn't seem too interesting, now would it?
And honey, they either desire you or not. That is something you simply cannot force.