If anyone asked, their answer would have to be that they weren't entirely sure exactly how it had happened.
Sure, they regularly went on missions together, it was only natural. Reno and Rude were partners in every sense of the word and it did make sense for the least-experienced of the Turks to learn from the most-experienced.
Then the missions with all four of them started. At first, Elena had a room to herself, as was only proper. Then the inevitable order came down. Cost-cutting. Four Turks, two rooms.
Tseng's first desperate thought had been that maybe he could share with Reno and Rude. That thought had been dismissed about the moment it had appeared. No, he really didn't want to know what they got up to, because, knowing Reno, the mere fact of his presence wouldn't stop them doing ANYTHING.
They had both accepted it with good grace, seperate beds of course, then, as inevitable as the move to cost-cutting, came the hotel with no seperate beds. The double room with just one double.
Tseng's first thought after that had been to sleep on the floor.
This itself had become routine when the next bombshell fell.
The moment he had climbed in with her he had known something was wrong. She was tense, unmoving. He frowned. Her body language was so obvious you didn't have to be a Turk to read it and he was one of the best Turks around.
it was only when his arms had wrapped around her that she had relaxed. He had made no move to make her tell, she had made no move to say, but after that, they shared a room. And a bed. And a secret, silent trust.