eileen wrote::cry: ... They are now really happy with each other but want pretty much nothing to do with Mommy. Unless of course it involves their breakfast and dinner (yes, they get spoon-fed)... They screech to get their way and whenever I do something they do not like... They act like I mistreat them when in fact I have only been lovable and have really tried hard to bond with them. This really breaks my heart each time I try to get close to them as I really am so crazy about them...
First, I have many birds, but never a conure, so my advice doesn't come from a species-specific perspective. Since you've had Sylvester only 4 months and Tweety less time, in your concern for his happiness, you gave him (now them) no chance to get to know you. I'm only presuming you didn't quarantine Tweety. The isolation of quarantine for 30-60 days allows excellent bonding time.
Now, unfortunately for you, they have bonded with each other and, as you say, are quite happy. I feel that it's cruel to separate bonded pairs, so my advice is that you let them have each other and you bow out gracefully. Let them enjoy your good care and love for them from a distance. That, to me, is the kindest thing you can do. Maybe in time, the breeder or another you respect, will want to take them and let them stay happily together for life.
In time, you might want to start over with another baby. Maybe not such a noisy conure this time. We can give you lots of support and advice for how to establish a loving bond with a hand-fed baby or a tame rehomed bird. What kind of parrot did you have growing up? That might be the kind you'd be happiest with next time.
Sorry, Paca