Male Characters X Heartbroken Yanderes [[COMPLETE]]

Forever Faithful: Part 1 (OCxOC)

Seiji was feeling very frustrated with everything that's been going on recently his girlfriend Tzumi has been going behind his back with cheating with some other dude. He didn't want to believe it at first until one of his good friends discovered her with the guy and secretly taken a pictures of them kissing each other then having sex in the others. He was greatly furious with her doing something like that before angrily crumpled the photo before looking up with a blank stare as he made up his mind.

Seiji:(thoughts) Tonight, I'm going to end our supposedly relationship once and for all. *pulls up phone* First, I'm going to show her own taste of medicine.

*Tzumi's P.O.V.*

Tzumi:(thoughts) I wonder how's Seiji doing back at home right now... I haven't been with him these past couple of weeks. I'm supposed to be his forever faithful girlfriend but, looking at myself in the mirror... I never felt more disgusted with myself in my entire life!!

She then looks at her hands before remembering the memory of doing it with someone else rather than her very own boyfriend it made her want to vomit she remembers the time where they both confessed their love for each other making the happiest memories. Until that guy showed up then later seduce her into having pure intimacy behind her own boyfriend's back over time she betrayed someone who greatly loved her with true genuine feelings towards her. She did something that couldn't be taken back so easy so she made up her mind not to see the guy who help destroyed her relationship with her one true love.

Tzumi:(guilty) I'm going to confess to Seiji he needs to know the truth. *sadly* I'm sorry Seiji...*crying*...I'm so sorry...

She arrived back to the apartment where they lived as she opened the door leading into the small hallway until she heard something herself almost sounding like moaning coming from their bedroom. Her heart felt a sense of foreboding before she slowly opened the door that they both shared together before seeing something that made her own heart breaking into millions of small fragment pieces. Seiji was now having sex with a different girl that was the ex-girlfriend of the guy Tzumi's currently cheating with herself as they both continued embrace into each other as intense moans and groans filling the entire room as Tzumi looked at the sight of her very own boyfriend doing it with this tan skin girl.

Tzumi:(shaking) *tears* S-seiji...?

Her own legs could no longer carry her as she collapse beside the bedroom door as Seiji looks stare at her eyes with coldness filling them as he continued to thrusting into the tan girl as she sees Tzumi smiles widely.

Mara:(smiles) Hey Tzumi~ *smirks* I'm sorry to say this but, Seiji's mine now~ He feels ten times more better than my ex-boyfriend he's so loving and caring~ *moans* I want to thank you myself for giving him to me~ I promise you I'll be the most better forever faithful girlfriend than your ever going to be!!!

Before she could say more Seiji began to thrusting into her with more fluid motion and force causing her to let an series of orgasms full pure pleasure that she has ever received in her own life. Tzumi stares at the image right in front of her before tears spilling out seeing the man that she greatly loved now being with someone else rather than herself. She couldn't say anything as she continued watching them having so much pleasure and full of love as she stares with such heartbroken expression.

Tzumi:(thoughts) *crying* P-please s-stop Seiji!!! PLEASE STOP!! LET ME MAKE IT UP TO YOU!! I SWEAR TO BE A BETTER GIRLFRIEND THAN EVER BEFORE!!! PLEASE ST--

Her thoughts stop as she sees Seiji finally cummings inside Mara as it filled her with great warm feeling before she kissed Seiji with a loving gaze. They both stare at the now broken girl staring blankly at them with tears flowing off her face.

Mara:(smiling) He's mine now~ So now get lost loser... while me and my new boyfriend have some more quality funtime~ Right sweetie~

She turns to Seiji with a lustful look on her face making Tzumi panicking internally as Seiji began to grope his new girlfriend's breast making her moan again while staring daggers at his ex-girlfriend.

Seiji:(smiles) Yeah that's right. I'm sorry to say this to you Tzumi. *serious* Between you and me...it's officially over now. We're no longer dating so if you can please kindly leave out of our home now while me and Mara have more of our special time?! *smiles* Don't worry your family has all of your belongings so goodbye!!

*Timeskip*

Tzumi was now standing in the rain as her thoughts kept dwelling on the fresh burning memory she witnessed. As she now felt what he'd felt by her cheating with someone else.

Tzumi:(whisper) I deserved it....it's my fault. *thoughts* It's my fault....it's my fault....it's my fault...it's my fault..its his fault....*speech* It's his fault...he seduce me in the first place causing me to losing someone that is very precious to me!!!! I'm going to make him pay!! *crazed smile* I'm getting you back my darling Seiji~ Don't worry I promise that I'm going to be your forever faithful infinitely better girlfriend~ We'll be together forever~