Who got Serena Joy pregnant?

In Gilead, Commander Fred Waterford and his wife Serena Joy had June as their Handmaid. As a Handmaid, it was one of June’s duties to conceive for a seemingly infertile Serena.

Why do the Wives wear teal?

Wives are dressed in modest dresses of varying shades of teal/blue, indicative of their supposed ‘purity’ as non-sinners (compared to the violent, but fertile, shade of red the handmaids wear).

Why does Aunt Lydia love Janine?

Lydia sees Janine as a good girl who is unfairly judged and misunderstood. This is the first inclination of a softening heart that audiences preview for Aunt Lydia.