I'm a little jealous

So Squish has been SUPER mean to our little Bear the past few days. Lots of pushing and hitting and scratching. I'm trying to figure out what the problem is. He was sent to play in his room alone several times today because we told him that our family plays nice and if he couldn't play nice that he couldn't be in the playroom with the family. I've asked him over and over what the issue is and gotten nothing from him. Lou asked him tonight, though, and he said "I'm a little bit jealous" So we asked him what he was jealous of and he said "You and Mommy and Bear." We've always made a huge effort to be equal with the boys and if I'm being honest, Squish usually gets the lions share of everything. It comes with the territory when you're older. But we got to thinking and, while he has spent a few weekends at Gaggi and Pop's and Bear had us all to himself, Squish has not had any alone time with us in the 15 months since Bear was born. So, sometime this week we are planning to send Bear on his first overnight trip to Gaggi and Pop's so we can get some quality time with Squish. Hopefully that will help!:)