you are confusing emails with instant messages.
The emails are sanitary and non sexual
Only the instant messages are specificly sexual.
Your argument is a red herring.
The only emails revealed only asked for a standard photograph which would have been available from the page office. While the email is odd, it was not sexual.
Nobody wants to make an life destroying accusation based on an email which was not sexual.
Remember back in the 80's and 90's when accusations of sexual molestation were SOP in divorce proceedings? Lives were destroyed in the name of child custody.
NOW the IMs are a different issue, that goes to the police.
No one said anything about a public accusation. A private investigation could have taken place to mitigate the enormous risk that Foley posed -- ESPECIALLY given his committee role! That was Hastert's ball and he didn't even pick it up off the turf. That's why he should resign.
My argument is not a red herring. If an Al Qaeda operative slips over the border and detonates a bomb in some city, who should take the heat? The border patrol? Or the President that did nothing to mitigate the risk by sealing the borders? You and I both know that it would go straight to the Oval Office. Hastert's leadership in the House of Representatives is not just some chump position. He's third-in-line to the Presidency. He's the guardian of the majority, and he didn't do any guarding when it mattered.
So tell me again why he should keep his job?