I've been reading but haven't posted anything before now... and I think Kiley's missed a major point... however short Lois and Clark's actual courtship was they had known each other for two years... not two months... before Clark considered telling Lois his secret... Also, Clark started really trying to tell Lois only after she had made a real commitment to him... he shot himself in the foot by asking her to marry him before forcing the words out... but he was trying to get there after she had made a commitment in WWW. When I read Kiley thinking about telling Larry she always touches on how she feels guilty lying... which makes me wonder if she's responding more to her commitment to him or her own guilt.
Lois and Clark are also making a mistake by saying "You don't know Luthor's like we do" and then clamming up. Kiley knows about Lois' engagement and the kryptonite cage... but Lois needs to talk to her about just how much she was dazzled by Lex... something she should consider before taking Larry as he presents himself. His reactions to several things were far more severe than the situation warranted. He sometimes reminds me of my brother and other kids I work with who have Autism. They find it extremely difficult to deal with things that don't fall in to their expectations.
Kiley is also at a disadvantage about just how much Lex did to her parents... she's read the newspapers and Martha told her about the cage... but what about the events of Neverending Battle or The Phoenix or the Clone Arc? I doubt the newspapers really touched on how any of that really affected her parents. On top of that is their encounter's with Lex's children... it's totally understandable to me that they would assume that Larry was like his uncle just like Lex's sons favored him. Virtually Destroyed was fairly tame compared to the events with Leslie Luckaby and Lex Jr.... even Arianna Carlin Luthor left her mark.
In short... just like in Carol's fic... they need to talk... Lois and Clark need to take a step back from their gut reaction to the name Luthor and explain things to their daughter... and Kiley needs to share her experiences with Larry with them and how she feels in this situation.
As for Larry himself... I withhold judgement... he seems like an ok guy... but there are all those little things that are off, the ones Kiley rationalizes away, that alone I could write off... but together make me question his genuineness. Finally, something about the scene with his mother still nags me...
“I was reading Hamlet yesterday,” Lacey said causally a few minutes later. “And I was thinking about how that story was an excellent portrayal of a young man’s love for his father on so many levels. I mean, on one hand, Hamlet is deeply grieving for his father’s death, but on the other hand, he wants justice for his father. Do you know what I mean?”
You added that for a reason... whether it was to make us uneasy or as foreshadowing... but putting that in the context of Larry wanting to please and find justice for the only father he's ever known... just how *did* that casino guy not only get out of jail but manage to get a piece of kryptonite?