Who were Elizabeth's husbands on General Hospital?

Elizabeth married:

Richard Lansing(divorced)

Lucas Lorenzo Spencer Jr. [Married: Oct 21, 2005; Divorced: Jan 18, 2007]

Lucas Lorenzo Spencer Jr. [Married: Mar 22, 2007; Divorced: Nov 27, 2007]

She dated/had affiars with:

Lucas Lorenzo Spencer Jr. (dated)

Lucas Lorenzo Spencer Jr. (engaged)

Zander Smith (lovers)

Jason Morgan (dated)

Ric Lansing (lovers)

Zander Smith (affair)

Jason Morgan (adulterous)

Jason Morgan [Engaged: Apr 7, 2008; Broke Up: Apr 7, 2008]

Lucas Lorenzo Spencer Jr. (dated)

Lucas Lorenzo Spencer Jr. (engaged)

Nikolas Cassadine [affair; Sep 15, 2009]

Hope it helps! :)