The Experiment Family

Introduction

Brent and Julie Test-Subject move out of Brent's parent's house and into a nice large block of land with visions of purple hearts dancing in their heads.
They are greeted by the neighbours on their first day, and both of them immediately start chatting up prospective... partners. But some streak of jealously goes through Brent when he see's Julie flirting with Five Number and he runs away from his own efforts to slap her. Personally, I think he was just jealous that Julie was having more success than he was!

Brent slapping Julie (who later got a new outfit), with Five looking on.

Still, it doesn't take too long for them to make up.
Some time (and a few promotions) later, Brent gets it into his head to propose. Julie accepts, and they marry on the spot (Julie changes her name to Experiment). It isn't until later that they realise exactly what they've done, but that doesn't stop them from continuing to... romance other sims.

Update #1

Brent gets caught by Blood Sample cheating with his wife Saliva.
Due to a back choice, Brent loses his job. However, he just reenters the slacker career track the next day as a Party DJ.

Brent walking in on Aurora and Nate

After 'cheering up' new widow Ivory Number, Brent decides to visit one of his other four loves, Aurora Specimin. Her son, Octavious, attempts to dissude him, but it's no good - Brent walks in on Aurora woohooing with Nate Labrat. He accused her of cheating (I don't know what he's complaining about, HE'S been cheating on Julie!)

Update #2

"Brent, darling, I have something to tell you..."

Brent visits Ivory, who tells him that she's pregnant with his child. Brent doesn't quite know what to say to this - he never wanted to be a father! And what would Julie say? (Oh, so now he cares?)
Nonetheless, one sim pregnancy later, Brent is the proud? father of a baby girl named Beauty.

Update #3