Well then tell him how you don't like how he orgasms so quickly. Talk to your partner about what gets you off, try some foreplay. Have him pleasure you with his mouth instead if he cums too fast. Nothing is going to change if you guys don't communicate and you'll both be unsatisfied. Communication is key to a healthy relationship.
My guy usually does that when we haven't had it for a while. But when we do it every day he lasts for 30-60m .-. it's kind of annoying tbh, going on that long. Im not a fkn pornstar just finish up jeez.
Anyway! Do it more often and I bet you that will change.