I get heavy in it
You're so into something you can't stop thinking about it and you start acting like it's the best thing ever.
She got heavy in it with that new song. She sang it in the shower, in the car, and even in math class.
He got heavy in it with that girl. He started skipping lunch to talk to her and even texted her in the bathroom.
I got heavy in it with my new video game. I play it nonstop and even dream about it.