Milf Or Housewife Or Mature Or Ladies Index Of Desperate Housewives Season 5?

Desperate Housewives Season 5? - milf or housewife or mature or ladies index of

Hello everyone, I have a question,
What really happened to Preston in the finale of Desperate Housewives Season 5?
He stopped, went to college went, or with the MILF Nina (or smthg)?
Thank you ~