WBZ-TV’s David Wade is engaged to be married again. The Channel 4 anchor popped the question to his girlfriend of more than a year, Francy Ronayne, under the rotunda at the Boston Harbor Hotel. “I’m on cloud nine,’’ Ronayne told us yesterday. “I can’t stop smiling.’’ Now in PR, Ronayne was press secretary for former state treasurer Tim Cahill. Wade co-anchors ’BZ’s morning and noon newscasts with Paula Ebben. He was previously married to WCVB-TV anchor Bianca de la Garza. Ronayne said the couple haven’t set a date yet. “Any day would be just fine,’’ she said.