platonic bridge-salesman
A crafty smooth-talker dude who initially claims to just want a "first base" friendship with a lady, but in reality is merely using this assertion as an "opener" to eventually getting into her pants.
Hot chick: Brandon claimed he just wants to take me for strolls hand-in-hand... yeah, right... sounds like da classic "platonic bridge-salesman" pitch to me --- I've seen how he looks at me whenever I wear a swimsuit or a sun-dress!