I orgasm too quickly and I’m a female

My boyfriend and I have been together for over seven months now and he’s the love of my life. The sex is great but I always finish very quickly and he rarely finishes at all? I also really like missionary position because he’s 7+ inches and some positions hurt. My boyfriend said that he’s essentially trained himself to last 45+ minutes in the bed room because he was terrified of premature ejaculation and disappointing a woman. He also said he finds it really hot when I orgasm (I’ve never faked it with him) but I’m concerned that I’m doing it too quickly. Some may see this as good but it takes me a while to “recharge” before a second round. I just feel bad that he never gets satisfied even though he says it doesn’t bother him. Does anyone else have this problem? Does anyone else have any tips to last longer if you’re a female?