As a previous poster mentioned, the divorce rate for those couples where one partner works away (i am referring to rigs as an example now where they are away for an extended time, then home for an extended time) is very high.
I thought long and hard about this, as I recently ended a relationship in this situation. I have read so many posts on FIFO group about this very same issue. What seemed to stand out was that those couples who have lived this life for a long time seem to be okay with it. Those that are newly married or met recently are the ones that seem to struggle more. So from that i take it that it is something that you just have to accept and get used to.
I did sit down with exDP and ask him how things worked with his ex as he has done FIFO for over 15 years. His response to that said quite a lot to me. I asked him how life was different for her when he was at work compared to when he wasn't. His reply was, he didn't know as he only knew about the part of when he was at home. So I said but surely you must have known what she had on her plate when you were away, to which he said no, not really, but he did help her out when he was at home.
I think this comment stuck with me for a long time before the break up and dare I say that it contributed to the final decision. His focus was on himself getting some down time, as he explained his job is very stressful. I get that, but many people work in stressful environments and don't get 6 weeks to recover from it. But it is what he is used to now, so I cannot see it changing. Not only was it a new relationship, but a long distance new relationship where the contact was primarily just messaging.
But what I took from a lot of the responses as well is that type of job makes one partner especially insecure. There they are stuck in the middle of nowhere, whilst life goes on at home without them. So I think that it generally a difficult industry to have a stable relationship in, for both parties.