[ Iorveth is also relying on Gale's willingness to give them shelter until the events of Flotsam die down to a background murmur, but there is that small-but-not-nonexistent possibility that they might get turned away. Or, well, that Iorveth might get turned away for being the terrorist at the center of the rumor mill. Consorting with a known criminal may not be the best for Gale's recovering reputation.

So: ] He'd not turn you away. [ Iorveth assumes. Gale likes Astarion, this much he knows for certain. As for Gale liking him, well.

...That's a tossup. Again, Iorveth assumes. He's fond of the wizard in his own way, but he wasn't exactly always kind to Gale in casual situations. ]

You could inject some much-needed excitement back into his life. [ Is a corroboration of Astarion's assertion. ] He never said so, but I suspect he enjoyed it when you pulled on his metaphorical pigtails.