Jennifer Lopez and Alex Rodriguez are swinging for the fences. Just three months into their romance, the multihyphenate, 47, and the retired New York Yankee, 41, are mulling matrimony, reveals a close Lopez source. “They’ve been talking about the future, and marriage has come up,” says the source. “They aren’t making wedding plans, but they have been talking about their lives.” STAMP OF APPROVAL The duo already have their families’ blessings. A Lopez insider says the singer’s mom, Guadalupe Rodríguez (she hung with the duo in NYC April 2, inset), and sister Lynda feel the Fox Sports analyst “is very charming and good to Jennifer.” And the athlete’s sister, Susy Dunand, has welcomed Lo pez into the fold, captionin a March 17 Instagram with the Spanish word for in-laws. “Their…
