Ianto's eyes followed Tony's, his sharp gazed focusing on the girl. He made a mental note of her, filing her face away. It might come in handy someday, especially if he needed Tony and the man had gone missing on one of his jaunts. He'd started filing away all of Tony's acquaintances though, just in case.
He coughed softly, a faint blush on his pale skin, and shook his head. Now this trip made sense. Tony was probably trying to do something nice for him, introducing him to the Bunnies. Most young men would find it incredibly gratifying, but Ianto had Jack. The other man had the oddest appeal; Ianto never wanted to stray. He could really explain it, especially since he and Jack hardly had a conventional relationship.
Then there was Gwen... which complicated it further.
"I um... actually have someone. At home." He wondered if it was wise to tell his employer he slept with men, or if he should just lie and say he had a girlfriend. He didn't want to shove Jack underneath the table like that, but they did have a cover. Jack was married to Gwen, and Ianto was her brother.