You and james were chilling in his room. As you wanted to leave you went in for a kiss and James practically trapped you in his arms so you wouldn't leave. As Sirius walked in he chuckles.

Sirius: "What happened? You should be in your dorm by now.

Lilith: "I fel into a trap. I went in for a kiss and now he got me! And he won't let me go!"

James murrs against your shoulder: "Mine"

Lilith: "Yes I know but... eh.." She trys to move

James pulls her even closer: "Mine!"