My two kids are now at the stage of really playing together.

They ride their bikes together in the backyard.

They roll around on the bed together.

They goof around together.

They like hanging out with one another.

They pack up the mess together.

They eat together.

They do lots of things together.

More often than not, they are also in mischief together.

They fight.  They cry together.

But watching them together make me happy.  Really happy.