Need advice

The first time I had sex with a fwb, he couldn’t get hard and then there was a time when we fucked but literally only lasted 5 minutes. It sexually frustrates me cuz I wasn’t pleased at all. Fast forward few days later today, he was fingering me and he was hard, but he tells me to suck him slow because he was gonna cum soon.. 🙄 like he literally came right when I started blowing. It really made me upset and I tried not to show it and tell him it was fine.. but I’m sexually frustrated. Do any of you girls have any advice as to how he can keep in his cum longer or something? I just find it crazy that we didn’t end up having sex which left me not satisfied. This is the first fwb/partner that had came during foreplay. Usually my sex life lasts from 30 min to an hour but this is really upsets me!