Matchpoints. Unknown opponents in a sectional (you would know most of the top players, though), the auction has been slightly out of tempo with pauses, though none so long as to warrant calling the cops, since there has been some jumping around.
Partner started the day as a solid citizen preempting wise, but has gotten much looser as the game has gone on. This is your first time playing together.
What is your lead against 6♥?