An investigator provided a New York jury a riveting account on Tuesday of an evening in Washington, D.C., in 2019 when an FBI surveillance team came across Sen. Bob Menendez and his girlfriend at a fancy restaurant. The investigator, Terrie Williams-Thompson, told the jury at Menendez’s bribery trial that the team was following another person at the table at Morton’s when she overheard Menendez’s future wife, Nadine Arslanian, ask: “What else can the love of my life do for you?” Williams-Thompson testified she heard the comment while sitting two arm’s lengths from the table while posing with a…