I've never had this happen to me personally but it is a common problem. A mature male macaw, with hormones raging, is faced with an immature female macaw who couldn't care less for his advances, and that forces him to displace his affections ~ and his aggressions. The whole situation must be as bewildering to the bird as it is to you. You can take comfort, DR, in the fact that it's nothing personal. He doesn't "hate" you. It's thwarted instincts that create overwhelming frustration for the bird, and he doesn't know how else to deal with the problem since he can't fly off to find a receptive mate.
In my opinion, you and your boyfriend would be wise to work with the bird daily on the basic Step Up command, passing him back and forth. If you don't maintain some control over the situation in this manner, you may end up with a bird who believes that he's been handed the role of flock leader and he'll continue to domineer his environment and everyone in it, even after the hormonal surge has passed.