Laxus knows that Gajeel is attractive but doesn't know if he's acting on attraction or impulse. [part two of "Use Me"]
"It's always the spider who devours the fly or in this case, it is the spider that devours the ladybug. Isn't that right, Ladybug?"
Gajeel just wants to be used like a toy and craves Laxus' undivided attention and love.