TRIS POV

Marlene left her jacket in my apartment again after truth or dare last night.

I pick up her jacket and start walking to her apartment.

When I arrive I hear groaning inside.

Really, her and Uriah are at it this early in the morning.

I hang her jacket on the doorknob and start to walk away.

When I pass the cafeteria Uriah walks out, I look at him in confusion.

"What?" he asks.

"I thought you were with Marlene," I say.

"I haven't seen her yet today," he responds, "Why would you think that?"

"I was dropping off her jacket and I heard groaning in her apartment."

"That means she's with someone else right now!" a look of horror and rage settles on his face, which is quickly replaced by hurt.

"I'll go with you to her apartment," I say. He just nods.

When we get to her apartment the groaning still hasn't stopped, now it is accompanied by thumping noises and screams. Uriah pulls out his key to Marlene's apartment. Marlene and whoever she's with don't seem to hear us walk in. We walk to her bedroom and open the door to a horrifying sight. Marlene is fully naked and bent foreword on the floor and Tobias is also naked standing behind her with his hands squeezing Marlene. He pulls in and out of her. Uriah and I stand there and watch in horror as the loves of our lives have aggressive sex. Tobias finally looks up and sees us standing there. He stops what he's doing and Marlene grunts in protest. But she looks up and stops too.

"Tris, Uriah we can explain," Tobias says.

"Explain what, that you cheated on me with one of my friends. Uriah's girlfriend!" I scream at him.

"Oh please, I was just using Uriah to get closer to the hottest guy in Dauntless," Marlene says.

"You knew I wanted to have sex with you, but you were too scared, and Marlene was more than happy to relieve me." Tobias says.

"How long has this been going on?" Uriah says, he looks more hurt than angry.

"The night before you went through Lauren's fear landscape," Tobias says.

"Why?" I say.

"I walked into the Dauntless-born's dorm to use the bathroom, and Marlene was in the shower. I took off my pants and opened the shower curtain. At first she seemed shocked but she pulled me in with her and ever since then we've been meeting up," Tobias says. He looks ashamed, but I can tell that it's an act.

"Well you can do what you want, we're through!" I yell and storm out.

I'm halfway to my apartment when Uriah runs up, I can tell he was crying but I act like I can't tell.

"I broke up with Marlene," he says, "Want to get drunk?"

I am about to say no, but when I see the look on his face I can't. I nod my head and we walk to his apartment.

We are on our fifth round of shots when he kisses me, to his surprise and mine I kiss back. I press him against the wall and kiss harder. When I kiss him I get a feeling I never got with Tobias. His fingers grip the edge of my shirt and pull it over my head, he unclips my bra and slides it off.

He carries me to his bedroom and lays me down on his bed he kisses me and I whisper to him, "take a video."

He pulls his phone from his pocket and starts a video. I pull off his shirt and fumble with his belt, when I get it off I put it to the side. I pull off his pants and he pulls of mine. He slides my underwear off and pulls his penis out, I grab it and stick it in my mouth, sliding it in and out slowly speeding up, he pulls out. I spread my legs apart and flip over so my stomach is touching the bed. Uriah reaches to my vagina and rubs it quickly with his fingers, then he lowers his head to lick and suck on my vagina. It feels so amazing, I have a body shaking orgasm. I push him to the bed and straddle him, lowering my body onto him and pulling his penis in and out of my vagina. I don't remember much more, but we posted our sex tape online.