I'm not to familiar with Eddie Van Halen, but I will try my best. For Death-on-two-legs babe :)

They exit of the stage after finishing the concert with 'Ain't talkin bout love'. Waving to thief fans all sweaty from the workout they just had. Your eyes were focused on Eddie. Carrying his guitar, sweaty, vain popping from his arms, and hot of breath, you were getting turned on by the second. You rushed backstage to find your man. Looking for him you run into David.
" oh Y/n? I didn't know you where here-"
" yeah yeah sorry, have you seen Eddie?" You asked. Your sexual frustration was building up and David noticed.
" Looks like someone has a lady boner..." He says and laughs.
You couldn't help but smile when you roll your eyes.
" seriously I need to find him" you say and he chuckles.
" try the music room" he said and you nodded, thanking him.
You ran to the music room and busted open the door.
" listen Alex, I will kill you if you mess wi-"
He looked up at you, realizing you weren't his brother and smiled.
  " hey babe" he said and you lunged at him, pressing your lips full force to his.
" sex, now" you said and he moans. He pushed against the door, locking it. You grabbed and ran your hands all over his body. Tugging on his shirt so he could take it off and him doing the same with you. You kissed his neck and he moaned but grabbed you.
" it's your night babe" he says and you smile.
He kissed your neck, surely leaving a love bite, making you moan.
You felt him unclip your bra and you tossed it somewhere. Your hands roaming and you tugged on his pants. You unbuckled them and zipped them down. He stopped worshiping you just so he could strip. You did the same and removed all your clothes. Both of you stark naked. He laughed and pulled you on the ground, hovering over you. You felt his tip at your entrance and you shivered, lightly dragging your nails across his back. He moaned and thrusted into you, causing you to moan as well. Soon he picked up the pace and started thrusting harder. Your legs wrapped around him, pulling him closer. He stated thrusting deeper and harder causing you to scream his name in pleasure. Both of you reaching your climax, he looked at you and kissed, taking in your moans. Soon you came and not long after you he did too. You both laid there, his arms wrapped around you and your head on his chest.
" well that was the first time I've done that on a dirty old music room floor" you state and he laughs.
" as long as it's the best music floor sex you have, in fine" he chuckled causing you to laugh. It was for sure the best.