So, I separated my two aggressive male budgies. One of them really loves my young English Budgie, Lemon, so I put the two together, and they are getting along perfectly. My other male budgie, Storm, is pretty lonely. I don't have anyone who can get along with him, so I was thinking of getting another budgie for him to be friends with. Storm has never been aggressive, and he is normally sweet and harmless, he has just been aggressive because he was jealous. Would it be a good idea to get him a friend. Right now he is alone in his cage. Also, if I got another budgie, should I get a young budgie? A lot of people say it's best to get a younger budgie. Please let me know what you guys think.
The first mistake was in trying to house two males with one female.
Housing two budgies of one gender with one of another is generally going to cause problems.
Hopefully you've learned from this experience and won't make that mistake again.
Give Storm at least a week or so to adjust to his new situation before deciding to rush out and add another bird which will just complicate matters further.
Try giving Storm extra time and attention.
If you work with Storm using positive reinforcement and clicker training, you may find he is quite happy as a solo budgie.
Do you have the financial means to ensure you can afford Avian Vet care for all the birds you have currently?
Are you following best practices for them?
Are you ensuring you are discouraging breeding between the male and female budgie?
If you do decide to get another budgie later on, I would then consider get a male friend for Storm.
Keep in mind, you will need to quarantine the new bird.
Quarantine means housing your new bird in a different cage in a different room as far away as possible from the room(s) where your current bird(s) are housed for a period of 30-45 days.
Budgies mask symptoms when they are ill. Symptoms may not show up for over two weeks.
Often you will not even realize your bird is not well. Many budgie illnesses are airborne which is why you need to quarantine your new bird in a completely different room.
It is also a good idea to always take a new budgie in to see an Avian Vet for a "well-birdie" check-up. This allows you to develop a good relationship with the vet and the vet can establish a baseline for your bird in case of any future illnesses or injuries.
You need to consider that the new budgie may have to be housed separately if Storm does not get along with it.
Take the time to get to know the budgies you have now.
Learn their unique personalities and enjoy them for being individuals.
Don't make the mistake of thinking having more budgies means thing will be better.
Having more means greater financial obligation, more time investment, possibly having even more multiple housing arrangements on a permanent basis (even after quarantine), potential for higher Avian Vet bills, etc.
Read all the links you've been provided in this thread and those I provided in your other thread as well.