Amy Robach & T.J. Holmes’ Ex-Spouses Andrew Shue and Marilee Fiebig Are Engaged

“Melrose Place” star Andrew Shue and Marilee Fiebig are officially engaged … after Andrew popped the question this past spring. Andrew — the former spouse of Amy Robach — told PEOPLE that he and Marilee — T.J. Holmes’ ex-wife — are “very…