Hollywood's best on-screen pairs took their chemistry off-screen into real-life love relationships, from secret romances to lifelong partnerships.

Zendaya and Tom Holland, who recently got engaged, kept their initial relationship 'under wraps' while she was on 'K.C.

So are Tom Cruise and Benedict Cumberbatch besties? - Cruise has gone on the record to say Cumberbatch is a ‘close friend’ ...