It as still a bit too warm for a coat tail or heavy vest but he'd gone and dressed up a little for the occasion anyway. It wasn't explicitly implied to be a date, but for what it was worth he wanted to be presentable at all times. Warren knew he could use this opportunity to sink his claws into her just a little further. Psychic types were understandably more difficult to court, which made them all the more worthwhile once he made them his own.

"Oh, don't you look marvelous~" He swung open the door with an appreciative purr, adjusting the cuff of his sleeve. "Come in, let me take those."

Besides! Flowers were pretty and she was pretty. Warren liked to adorn himself with pretty things.

He didn't plan on being here long, but it would be a nice bonus if he could make his smelly roommate jealous. This would be an excellent, effortless way to find out what made the mutt tick and what didn't.