1)
Why does it say "Al Tachmod Yafyah bi'Lvavecha"?
1.
Malbim: Beware from being trapped, both via her beauty, and her winking.
2.
Malbim (according to Melitzah): Do not desire their ways of investigation.
2)
What is the meaning of "v'Al Tikachacha"?
1.
Rashi: Do not let her take your Chachmah from you with her eyelids, which wink to you.
2.
Malbim: Refer to 6:25:1:1.
3.
Malbim (according to Melitzah): Do not be drawn after their proofs. It seems that their proofs see the light of dawn (but this is illusory).