Okay ladies,

so my man and i️ have been dating for a while now and the sex is amazing. but he can’t seem to cum. sometimes he does, and when he does it’s amazing for both of us. but other times we can go for hours and still nothing for him. it’s making me really insecure and when talking to him he says that it’s not me and it’s totally all him as to why he can’t cum. what should i️ do??