The "Go-With-The-Fun" Guy

Jason. (Yeah. Let's just call everyone names so that we would have something shorter to call them.)

You're planning something with your friends.
Jason then comes in and says "Hey! What's up?"

You told him your surprise birthday plan for one of your friends.
Then he says, "Wow! Count me in!"

He then gets an amount from his wallet and makes "amot" to make the plan a success.
So then you thought he actually cared.

He showed up during the party and had a really great time.

After the party?

He's off to some other people's "fun plan".

Yeah. He's the "everywhere goes" guy.

He really doesn't stick to a single circle.

He goes around everywhere and sees which of the people are having plans on a weekend and then just joins them.

He doesn't really care.
What matters is he's gonna have some fun.