I think in your particular case OP, it depends on whether you want to settle down with someone imminently i.e. a monogamous relationship and children. If you feel that this is something you are ready for, or your age and fertility make this more urgent, then it makes sense to have a chat about where he sees this relationship heading. If however, this is all way down the line for you, you've got time on your side to let things develop at their own pace.
I absolutely hate books like The Rules or Men are from Mars, but I also know that I am an "all or nothing" type of person and knew this about myself from a very young age. Consequently if the sparks didn't fly in a relationship, or the chemistry wasn't there, I moved on pretty sharpish, because I never wanted to settle for anything less.
When I started seeing my H 28 years ago, he was the first man I hadn't got bored with at some point. Fortunately, he felt the same way and our feelings for one another were explosive and intense. Having been married for 26 years now, that love has survived some real challenges, but although it has waxed and waned over the years, the incredible chemistry is very much there and we are still, for eachother, the person we would most want to share an evening with.
We are compatible intellectually and sexually and have always "got" eachother. When I was first married, an older female friend (a "marriage guidance therapist, which shows my age!) told me that in her opinion, couples achieve far more if they are generally polite and kind to one another. Consequently, although I can think of a few occasions when I have called my H names and they were taken on the chin, he has never once called me a bad name and we have never belittled eachother in front of, or to others.
Having separate interests and friends, as well as shared passions and mutual friends, have helped our marriage. I am probably the more independent one, but we both enjoy our own company and are quite happy to spend time and solitude on our own.
The other issue which took some time to resolve in our marriage - and resurfaced every few years when work circumstances changed, was the thorny area of domestic chores. My H had a tendency to be pretty lazy and I had a tendency to be over-responsible. I think we've got it right now, although tbh, I actually think my H does more than me now around the house 
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Everyone's different, but FWIW, I do see couples having a lot of problems further down the line when the chemistry really wasn't there from the start, or when one or both of them "settled" for something less than their ideal. That chemistry and mutual fascination, together with great sex, is a hell of a glue when life throws a curve ball in your direction.