you should be having this talk with him and not us...tell him to make a choice, NOW!!!
That's right, check her!
I like to think that I'm very attentive, take my time and stimulate her to a state of ecstasy. As you alluded to, I'm going to get mine eventually, what can I do to ensure that she gets hers? Multiple times, if possible. But ultimately, regardless of gender, we are responsible for our orgasms, what gets us there.
Look, if she can't keep fit and height weight proportionate before marriage, she definitely won't after marriage.
Some men has it wired to react on this.