Summer Fling or Real Thing?

Are these summer couples oh-so-hot – or about to fizzle? Vote now!

SOFIA & JOE

Hollywood's newest (and hottest) couple, Vergara and Manganiello linked up after her split from fiancé Nick Loeb. PEOPLE's Hottest Bachelor and the Colombian bombshell "just started to hang out" at the beginning a July, a source told PEOPLE, and have been "all over each other" when spotted out around L.A.