The
Relationship Escalator!!
It's true, that might be the growth the OP was talking about.
Yes, well it is important that you actually talk about what changes you wish to happen or not happen in the relationship, and why.
I for instance would not want to be with anybody who didn't want to have kids. I am very "Monica from Friends" about the whole question. That doesn't mean I don't aqknowledge that relationships are valuable without kids, it just means that I crave them. I am in the situation where my husband wants kids, and my boyfriend sees me as having kids but he is unsure if he wants to have a dad role or more that of a playful uncle. I would be happy either way, as long as I have the kids and they are both involved somehow. Those are things we really need to talk about more, in detail.
Another case; I like to live with the people I date, IF the relationship is close enough. The guy I was sort of dating before, I would never live with him - we had totally different standards about everything, I picture our future as "once a week and maybe every other weekend" sort of relationship. Wheras with my current two guys, I feel very comofortable sharing space with them. They are still figuring out how to share space with EACH OTHER, though, and how we balance the theesomeness (or whatever I shall call the platonic side of our relationship) with the dyads. It looks like that we for a month will live close, we have also experimented with sharing a house for a week which was ok. I know a V who share a house but their house is big as they are pretty rich compared to us, I mean we might afford a flat plus a small flat (or one, bigger flat or a small house). So I don't know if I will prefer two sets of households, or one, or something in between.
The ladders/escelators are not just for dyads but for other relationship structures as well. Like; when should a metamour be introduced to its metamour's family? Do we relate to all three set of grandparents? etc. Lots of interesting questions that could come up.
But while I like a little bit of Hollywood romance, I think it is best to just look upon relationship stuff as items put on a table, and you can pick up an discuss an item at any time. With us, life long commitment was on the table pretty much from the start (my guys are pretty romantic in a sort of drastic way).... Often people are naturally on the same page with these things, still it doesn't hurt to be a bit explicit about what one wants, even if that can change later on. I think that even when people want the same things, it speaks of respect that you bother to check out their side and explicit want to hear their wishes. Not everyone are used to telling how it is, I mean my boyfriend claimed that he hates weddings and was my very reluctant date to one, but once he was there (his workmate was the groom so we felt obliged to go), he found himself much freer than he had imagined. He absolutely loved being my date there and started to fantasize about me as a bride and what not. I don't think it is always so easy to ask people what they want and get clear answers right away, but at least with asking we can say; OK, this is the subject, go think about it, feel free to talk and we will decide at some point how to do it.