What's The Big Frigin' Difference?!

Don't let these two almost identical images of Rihanna and A$AP Rocky make you send out an SOS! Follow your heart to find love in a hopeless place ... and all the sneaky switches!

One of the hottest couples in Hollywood -- who just announced they are expecting a baby a few weeks ago -- was spotted out after dinner in New York City last month ... and we have made a few changes to the original pic! Love is on the brain this Valentine's Day weekend so see if you can see the differences in these two super similar lovebird snaps!