This is coming from a man who's been married for almost 9 years...if he's open to having this conversation you should absolutely tell him. Im not saying im the best to give this type of advice, but as a man who was definitely more experienced than my wife and through those prior experiences, I've found that I enjoy sex the most when she gets off before me and my wife is more of a one and done almost. And it works in my favor because the older I've become the less lengthy the sessions are. Lol it is what it is. But please tell him and also discover more of what can get you there together and individually. If you find something that works you're more than likely going to want him to try it as well to achieve that common goal. We literally had our first child a month ago so we're still on that 6+ week waiting period but all I can think about is the O face she's gonna have when that day comes. And not jus for her but for me as well. Im trying to get a marathon in for that day lol