squint at, sidelong glance
睞 centers on looking indirectly or askance: squinting at something or giving a sidelong glance, often with a sense of scrutiny or suspicion.
睞 combines 目 (eye) with 來, which likely contributes the sound and may suggest a coming or approaching glance. The exact historical development is uncertain.
The eye 目 on the left and 來 (coming) on the right suggest a glance that comes from the side: squinting or looking sidelong.
For ライ, imagine a sly person giving a sidelong glance while saying 'lie'—the lie cues ライ, and the glance is indirect.