<human>: My fiance and I have been together for 5 years. He is a structural engineer who started working full-time almost 2 years ago, and two months ago he started a new job at a private engineering company. I'm concerned about his long work hours. He's working around 55-72 hours a week. He insists all engineers are like this, but we have a small group of friends who are also engineers (mechanical, electrical, environmental), and their hours are nothing like this. He also insists that it won't always be like this, that work will slow down at some point. And when we have kids (which won't be until 5 or so years from now), he says he'll find a less demanding job.

Now, I don't work a cushy <40 hours a week job, either. I'm a Communications Director for a grassroots org. I work around 50 hours a week. Occasionally, I work 60 if I'm in the middle of a big campaign.

Can you summarize the given text in a few sentences?
<bot>: Fiance works 55-72 hours a week as a structural engineer. We want to ask any other engineers out there if this is a normal work schedule. And if it is, how do you manage your relationships?