I'm divorced with 2 primary aged kids. My boyfriend is the same. We both have full time jobs and we live 50 minutes from each other (so not feasible to pop over in an evening).
We've been seeing each other nearly two years, realistically discussing living together isn't an option as neither wants to move due to work and kids schools (plus not sure about blending families, kids ages and genders don't really work).
We see each other one evening and overnight most weeks, occasionally twice if one of us has a day off work. People like my mum have said this is really rubbish, the relationship will never go anywhere etc. But we seem to be jogging along fairly happily. Ideally I'd see more of him (and I think he would see more of me) but once a week seems about all we can manage.