Nick Lachey and Vanessa Minnillo
09/04/2009 AT 02:30 PM EDT
Some couples just can't stay apart – just ask Nick Lachey
and Vanessa Minnillo
, who've been spotted rekindling their romance in three different cities in the last week.
The couple, who split in June
after three years together
, were spotted last weekend in Los Angeles making out in a booth at the bar Dime, completely unaware of anything in the world except each other.
Then, on Wednesday, the couple took it to the East Coast, where they hit a party at the bar McFadden's with Entourage
star Kevin Connolly. Lachey, 35, and Minnillo, 28, called it a night early and left at the unfashionable hour of 9 p.m.
Just the next day, the pair decided to spread the love to the Midwest, and were spotted together at Cincinnati's new hot spot, The Righteous Room.
But don't call them boyfriend-girlfriend just yet, a friend of the couple's tells PEOPLE.
"Nick and Vanessa are not officially back together, but they're hanging out," the source says. "They'll see what happens. Maybe a reconciliation will happen, but they're not exclusive right now."
Reporting by DAVID CAPLAN and LESLEY MESSER