My real name is Gert, which comes from the Gerard. Or in Germanic, good with the spear.
I don't need pick up lines.

Tough of course you could try with:

Italian girl:
Wanna try a sarissa, or are you going to stick with those Gladii?

French girl:
You know how the gaesatae really charged?

Other options:
Want me to penetrate your battle line?
Do you know where the wedge formation comes from?
You know, you have the most beatifull cantabrian cricle of the world.
Would you wear lorica segementata?

Also before ever going to take kit up to a serious relations, check wether she has the money script activated and wether she has vanilla or EB upkeep.