Back in Paris you told me you were suicidal
It's not a vacation if I lose you to the Eiffel
You're gorgeous but you can't fly
In reference to the iconic Eiffel Tower, a landmark in Paris, France.
Essentially, a common suicide is when one jumps from a tall building or a bridge, so, when they’re on holiday in Paris and she/he tells him she’s suicidal, Frank fears that the person will jump and fall the over 1000 foot drop, and she isn’t a bird so there’s no chance she’d survive.
However, the nod to Fran suggests that this is about French model Willy Cartier who Frank has been rumored to be dating.
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