When you think of Eijirou and Katsukis relationship, you would think they are best friends. Partners in crime. Two peas in a pod.

But its so much more than that. Years of friendly rivalrys, being a wingman, helping with wedding planning, and the occasional drunken takeout before Eijirou got married to you after you hit 23 and he hit 25.

Of course you where a constant in that mix, a bad influence on them in high-school. Sneaking out, drinking, skinny dipping at the beach that is a mile away from town.

Now you and kirishima have been happily married for almost 3 years now, katsuki was around constantly. Staying the night, helping with dinner, groceries, when Eijirou was injured after a bad battle that had him on bed rest and medication for months.

you where their rock, and they where yours.

Of course as time passed, there was subtle signs. The flirting, the sex jokes that where just teasing, The patt on the butt katsuki gave you two after doing good on a mission the three of you had been partnered on.

Of course, katsuki was yalls best friend. You and Eijirou where married. You where his wife and he was your husband.

but eventually feelings developed. You felt awful, you loved Eijirou. Nothing could change that, so why cant you work out with katsuki without staring at how his back muscles flex when lifting.

You looked it up. You should have known.

"why do I feel so tingly around my husband's best friend?"

You went down a rabbit hole till you got your awnser, a one sided emotional affair. You where scared shitless! He showed no interest in you, and all you where thinking about is his calloused hands holding your thighs apart and- GOD DAMN IT FOCUS!

You pushed thoes feelings down, deleted the searches and kept everything to yourself.

Until one night.

After a long tiring mission with the two men, the three of yall ended up back at you and Eijirous home. You showered and zonked out quicker than the two of them.

Around midnight you woke up to strange noises, you quietly padded to the living room. The warm dim cast of the dying lamp on the side table gave enough light to tell you what was going on.

**Eijirous large frame had katsuki pinned to the wall. Large hand fisted by his head against the brick. Katsukis sweats yanked to his thighs showing off everything. **

Eijirous grunts n sighs mixed with katsukis huffs and growls. The blondes teeth gritted as his best friend slammed into him from behind.

Eijirous free arm was hooked under one of katsukis arms hand gripping the opposite bicep. Your husband's back to the explosive blondes chest.

"fuckin- shit."

You heard katsuki grunt before another little crackle of his quirk going off was muffled by the wood of the door frame that was starting to turn black from the heat.

Eijirou moved fisting a large calloused hand into katsukis hair yanking it back, making the blonde arch against his bare chest.

you just stared in utter awe, admiring katsukis gritted teeth and furrowed brows. You admired how Eijirou was making him take it.