My Brother Has A Portal In His Bedroom

When Thomas's' older brother, Logan, wakes him up at ten in the evening to rant on about alternate dimensions, Thomas did not expect to find himself, half an hour later, being ready to head straight through a portal. But, hey! Expect the unexpected.
Now Thomas is in a crazy steampunk world, where the government is trying to stop the world from finding out about the very last tree, he can't go home without the government following him, Logan's gotten a hopeless crush on a young man he's met and Thomas's' new best friend has managed to get them stuck on a pirate ship with his twin brother, his twin brother's' boyfriend and a man he once slept with.
Yeah, it's going to get a little out of hand...