So what is your character's family background? How do they organize their domestic/reproductive/romantic arrangements in adulthood? And what other possibilities do you see?
Ulf grew up in a clan. His father died when he was young, but essentially he was raised by a collection of "aunts" and "uncles" so that wasn't a huge deal for him.
Because of various circumstances, the clan likes to encourage late-teen/early 20s people to have at least one child before heading off to join the military, or go to higher education, or get a job in the city... the people who look after those children are the aunties. It is not expected that marriage is necessarily involved in producing these children.
In some respects, it's considered better for a child to be raised by someone other than their biological parents once they've reached a certain age, because parents either don't discipline their children enough, or they drive out the spark of resistance that can make a good warrior.
Ulf's clan is Exogamous and Matrilocal. They marry outside the clan, and usually the women stay, and the men go off to their new clan (There are exceptions, but that's what is usual).
Marriages above a certain status level are usually political and a matter of negotiation between clans. There's been at least one marriage offer made for Ulf since he came back to the republic, although he doesn't know the details of it since it was turned down. It would be a political match since Pod pilots are a source of wealth and influence (and yes, Ulf contributes isk to his clan).
Who Ulf gets into bed with is less a matter for the clan than who he marries, although the aunties do follow the gossip sheets, and giggle at the stories.
Generally, on the clan lands, the unmarried people hang out together in shared buildings where they share the cooking and entertainment, and be basically social in groups. Not everyone in the clan shares the same groups, but they're generally of similar ages and work together. Everytime Ulf goes home to visit, one of his "cousins" makes him chop onions for the group meal to remind him that he's still part of the social group, desite being a high and mighty pod-pilot.
Once married, couples can ask for the clan's help building a marriage house - where they get to have their own space. Married couples will often share group meals with other married couples, or with their age-group cohort social groups, but sometimes have private meals as well. There isn't really the nuclear-family-housing-unit as such.
Spread around the clan lands are different groups of these buildings, with central halls, dorms, and marriage houses clustered around them and near some part of the working clan lands. There is some movement between the building groups, as seasons change, or people get irritated with their cousins and go off to one of the other areas for a few months etc.