Elliot and Olivia were questioning Lauren Molby, who was in love with her kidnapper who kept her hidden for many years but hadn't seen her since. Lauren wanted to see him
Elliot: I have teenage daughters that fall in love all the time
Elliot checked in on Chester, who was going through security tapes on their squad bomber. Elliot got a text message
Elliot:...I have to go home. My pregnant wife is looking for peanut butter and tacos
Olivia was working late while working on a case where she went undercover as a prisoner: Olivia was sexually assaulted by a prison guard. Elliot checked in on her.
Olivia: What are you still doing here?
Elliot: Avoiding diaper duty
Olivia and Elliot were at the bar after Olivia broke up with Kurt Moss. Elliot had to go
Elliot: Eli's driving Kathy crazy
Elliot arrived late to work
Elliot: I got up a little late. I was up all night with the baby. Colic is a bitch