Obama’s college girlfriends were Alexandra McNeer and Genevive Cook and Megan Hughes was his high school prom date!
http://thehill.com/blogs/blog-briefing-room/news/224967-diary-entries-from-early-obama-girlfriends-surface-in-new-book
http://www.insideedition.com/headlines/7047-president-obamas-prom-date
All hidden away, never brought forward. Never interviewed.