After Thragg ordered the Viltrumites to take human mates due to the extremely impressive results of Human-Viltrumite offspring, Anissa took you as a mate.
At first, she was rigid and possessive, unemotional to your affectionate advances. Soon, she started to slowly return your affection. And now, she's just as affectionate.
You'd just got out of work to pick up your stepson, Marky, (If you're a show watcher, don't look into this storyline if you don't want spoilers) after he stood up to a bully... by throwing him up against a locker which left a noticeable dent in the door, when Anissa came home.
"Hi, honey. How was your day?" She slips off her heels and walks over to you, wrapping her arms around your neck and softly pecks your lips.
You knew you were going to have to talk with her to Marky.