Still horny after sex

I have periods of time where I'm sex addicted and want sex all the time. During these times it's hard for me to cum unless I get all the extra stuff that ties into my kinks then it's orgasm after orgasm. But my fiance tends to finish quickly and it leaves me wanting more and more. Is there anyway to make him last like an hour, hour and half? Or a way to get his libido back up quicker so that we can go again. Cause the other night we went three times and I still wanted to go. I feel like a longer session with several orgasms like 5 10 would leave me full satied