They have very much in common. They both like corny romantic movies and both really enjoyed horror stuff as well. Had a soft spot for the music, and both had a sense of fashion. These two really enjoy each other's company because I could believe. Even though their backgrounds are very different, they loved each other no different.
-LOVES roses scented bubble baths(especially with glitter bath bombs)
-loves to shop for jewelry
Silver grew up in a very rich family. Her whims were always catered to. Anything silver could have dreamed of parents would give to her. But the only thing That she really needed was for her parents to actually be there for her when she needed them, they were always off on business trips or too busy focusing on themselves to help her. Anytime silver would cry or complain her parents would just give her bits to go to the store or give her objects she's always wanted, but it was never her parents, he was always stuff. Her parents would often pass her off to the nanny to watch silver for days or weeks on end without seeing her. This obviously made silver very sad but she couldn't really cry over it.
The only Pony who actually understood what she was going through was diamond tiara. This often led Silver to tag along with diamond tiara wherever she went. She never wanted to be alone especially since she was the only one who actually got her. Silver spoon would often copy anything that diamond Tiara would do, just so that she wouldn't be alone or lose a friend. Silver Spoon often dreamed of having a dad that cared for her just like I'm in Tiaras dad did. Sure he was busy and had a lot of work to do but he still made time for her. Silver Spoon’s father never seemed.
A very young age, she could see just fine from far away, it was just that when it came to reading she struggled. The words when reading were very blurry so it ended up holding her back for a very long time. First appearance didn't look too much into this, especially her father. He would often dismiss the problem she had. It was a couple months before both her parents finally took her to the doctor to get her glasses so she could read.
Silver spoon and diamond tiara or practically sisters at this point. They did everything together and were practically inseparable. they often took after each other in common traits and behaviors, and sometimes these behaviors weren't so good. A common way for the two of them to vent out their frustrations was to pick on the CMC. CMC had so much better lives then what silver spoon and diamond tiara. they both wanted to make the CMC suffer and miserable they didn't really care as long as it made them happy.
Sweetie Belle grew up in a relatively Rich family. They weren't stupid rich, but they have enough money to buy whatever they so pleased. Sweetie Belle has always had a rocky relationship with her family. Especially Rarity, the two were always fighting and getting disputes and it only worsened as we've all got older. Reviews on how her sister ran things and how she got things done changed. She didn't quite agree with how her sister was doing things. But nonetheless they still loved each other. The relationship with her parents was quite different. She loved her parents very much but it was one of those situations if you had to choose she would always pick Rarity.
The CMC have been closed for a very long time. they always did everything together and would hardly do anything apart. But things slowly started to change as everybody has things going on in their lives. Applebloom had more work to do on the farm now specially since she was an aunt. Scootaloo was often making trips to the land of the hippogriffs and was often also helping Rainbow Dash. As sweetie. I was busy helping rarey and helping keeping the boutique nice and clean. The CMC were really busy with their lives, but that didn't stop them from still helping ponies get their cutie marks. And all this was supposed to be their Destiny, their lives purpose, Sweetie Belle couldn't help saying to herself was this really what they had hyped up all this time? she knew she loved what she was destined to do, but it still felt empty.
When the time for reforming Cozy glow was coming, she was very nervous. Yes, she was skeptical and all but she really did want to see the better and cozy. When the Cozy glow had arrived, things started off real slow. She was hesitant in sassy for the first couple of months but after she began to have friendship in her life,(real authentic friends) let's just say things turned for the better.