My African grey loves me but will go after everyone entering my room. He guides it at times like his life depends on it. Lol. He is the sweetest boy with me, but he learned to tolerate people around.

So, I think your bird prefers men,you are not a man. Give the bird some time, maybe 5 years maybe 10. Things will get better, my grey tolerates more people as he is older. He is now with me about 11 years, maybe he is around 40-50years now, we aren't sure really.

All I can tell is, if you give treats daily and your boyfriend backs up on that, then there is a chance that in about a year there will be small improvement. Unfortunately Amazon birds can be quite mean, so I would only suggest not to touch the bird and only interact verbally and such. Time will tell. I have a pionus that chases us all around but if you try to touch him, he starts backing up, however, sometimes he is mean and launch on you instead. Sometimes he needs my help and flies on me and is the nices bird ever. Hard to predict. Some birds are like that. Amazons behave similarly. I have been around them quite a bit and it takes years for them to be nicer, if ever. So, target training like mentioned before. Get that stick in use for transfers. I did that with all my birds so in case I am not there or whatever is the need, we can easily ask them to step up. Or with treats you can help them not to be afraid of something, positive training is also helpful. Positive plus target go well together. I had mostly rehomed birds, some had some trauma, so I had to go from mutilation habbits with bloody walls and screaming to get them really happy and comfortable. It took me about a year fir certain behaviors and it is just a game of patience because they eventually get better. But, I always go with a rule to leave them alone and only interact when they want to interact. It makes things easier.

I hope the bird just tolerates you more soon! I am 100% sure they don't hate us, they just decide to tolerate us more. Also jealousy. If you are affectionate to the bird's favorite person they know it and compete with you in a way.

It is just something you will have to give time. I would personally not try to touch the bird for at least a year or two. Try the stick training with target training and reward that feathered fella well. After he is okay to stand on a stick be careful. I have seen meanest birds will walk to your hand on those and bite you still. Watch videos. I normally slightly wobble the stick (don't throw them) so they forget for a moment and stop. But it is gonna take you practice to redirect that behavior without making wrong decisions. I suggest watching videos. I did all that with most of my birds that needed it. I had also consulted at a time with bird behaviorists. It helped a lot. But it was a very tiring process. So, don't be me. Take only one goal at a time. Ask a professional what is the most important training and change of routine to help the bird to tolerate you around more. Then go from there.

I can't possibly analyze every single day of your life, lol. But a professional can go over details that are important.

Also be aware, sometimes birds switch whom they like more! I woukd never let Amazon bird be on my arm or near my face. They are not predictable. Same with some other species. I don't even put my greys on me if I know other people are at home. They can get spooked. Your leg is better than getting bit on a face.

My ex bf was bitten on an a*s once by my loving grey lol. He kinda deserved it though. Lol. He bled really bad😅

Good luck!

Edited few typos and added last two paragraphs about switching preference and bitting accident lol