A new biography about Barack Obama explores how young Barry proposed to his live-in, white girlfriend but dumped her when he figured an interracial marriage would be a liability to his political career – and so . . . Michelle.

Obama’s vague autobiographies hardly addressed his previous relationships before Michelle. The author of the new biography, Pulitzer Prize-winning historian, David Garrow, located one of Obama’s top-secret girlfriends for his book “Rising Star: The Making of Barack Obama”.

An Oberlin College professor named Sheila Miyoshi Jager was Obama’s girlfriend during his early days in Chicago. He dated and proposed to her years before Michelle came along.

Obama allegedly proposed to her on two occasions:

1) At her parent’s home in 1986.

2) A year later before he disembarked for Harvard.

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On both occasions, she turned him down.

Obama quickly decided that Jager was a liability for him anyway as far as a career in politics in Chicago goes because of the fact that some of the African-American politicians frowned upon marrying outside their race.

The Washington Free Beacon reports:

“Illinois state senator Richard H. Newhouse Jr., the Washington Post notes in its review of Garrow’s book, was often mocked behind his back for ‘talking black but sleeping white’ because of his white wife.”

A family friend of Obama’s corroborated the story saying it had to do with Jager being white.

A recollection of what Obama said is recounted here:

“The lines are very clearly drawn … If I am going out with a white woman, I have no standing here.”

Obama and Jager allegedly spent an afternoon screaming at each other on a summer getaway with friends listening nearby.

The Washington Post reports:

“‘That’s wrong! That’s wrong! That’s not a reason,’ they heard Sheila yell from their guest room, their arguments punctuated by bouts of makeup sex . . .”

The last time Jager heard from Obama was when he called her asking if she’d heard from any biographers.