Being like you, I lose all interest after cumming so much prefer to cum 2nd. I played with a top who knew this and that was usually how we played. He liked tying me up, using me for ages before fucking me then jerking me off all over my own face.
One day we met and he told me he wanted my cum as his lube. Kneeling in front of him, he tied my wrists to my ankles and inserted a plug into me, then slowly jerked me. As I started to get closer I begged him to stop as that would be the end of our meeting. He didnt, he herked me fast and hard then slow until I couldnt hold it any more. As I was about to cum, he slapped my balls hard and pulled me forward as I cried out , my cock onto his, ruining my orgasm and get my load all over him. He squeezed every drop from my cock onto his.
He gagged me and let me fall forward onto the floor my ass in the air, my head on the ground still tied up and removed the plug. Then inserting his cock deep in to me, he brutally fucked me slamming in and out for what seemed ages. No talk, no words only me trying to moan through the gag. Finally he pulled me back onto his cock impaling me deeper than I ever had and unloaded deep into me. HE came over and over. When he pulled out, he removed the gag and made me suck his cock clean. He untied my hands and told me to do the rest after I had left. As he walked out the door, he just said see you next week slut.