Then-Senator Barack Obama with his wife Michelle on their October 18, 1992 wedding day. Reuters Who can resist romance between the commander-in-chief and the first lady on Valentine's Day?

Married on October 18, 1992, Barack and Michelle Obama have captured our hearts with their love for one another.

Obama mentions his wife in almost every speech he gives, and often seems unable to resist showering his wife with PDA, even when the cameras are rolling.

While President Obama spent the weekend golfing in California, the First Lady sent him a Valentine's Day message via Twitter.

At the end of his weekly address, President Obama wished his wife a Happy Valentine's Day.

Even though they are across the nation from each other today, we have collected a few of our favorite photos of America's first couple's most romantic moments.

Brett LoGiurato contributed to this report.