I don't think Lois was ever galactically stupid to not see CK=S, but I agree with many authors when they write her berating herself a bit because I feel she should have wondered more, thought more about it. But I don't think that in any way has anything to do with her reading of men. Her problems with that stem mostly from inexperience in personal matters. And while I do believe S1 Lois could be called a bitch, I don't really blame her for it. If my feelings (and I'm a guy) had been trashed that systematically by that many members of the opposite sex, I'd don't think I'd be Mr. Sunshine to the next one that seems interested in me. Having a relationship with Lex likely made her feel valued and esteemed, which is what she was striving for in her work as well. And one big difference between Clark and Lex is with only a bare knowledge of each, she could be sure that Lex wasn't looking for a one night stand or anything, and Clark was unknown. Yes, Lex did those things with other women, but her relations with Lex never even got as intimate as working with Clark did. She could hide herself from Lex, but Clark knew her too well to get involved. Rejection by Lex? She could tell herself he didn't know her well enough, even though she was glad he didn't. Rejection by Clark? Having someone who knew the true her reject her would feel like a rejection of her very personality, and that she couldn't handle. That's why Clark was off-limits at least as early as HiM, if not earlier.
