Friday how did you expect Sutherland and Christies characters to get dressed after sex Was he suppossed to put her knickers back on with his teeth?
The point is that Roeg edits that sequence in a deliberately (oh, God, it's that word) problematising way, and it symbolises all that is wrong with their marriage as well as all that has been right. I just don't see how, either in its own terms or within the context of the film, it is romantic and joining.
Firstly, look at when it occurs in the film. We've seen them growing further and further apart after Christine's death, and the strong implication is that this is the first time they've made love since then. The lovemaking follows immediately on from Laura being told by Heather (the blind "medium") that she can "see" Christine. Look, we're being told, it's Christine's death that has driven them apart, and it's the promise that Christine might still in some sense be alive that draws them back together. She initiates the lovemaking, not him. But we suspect, and are then shown, that Heather is not a medium but is a charlatan; even their love making arises from a deception. This isn't magical realism, so the central fact of their marriage is that Christine is dead, and whatever they do is not going to change that. Laura has not accepted Christine's death, so their lovemaking is a symbol not of them coming closer together, but of Laura's refusal to accept reality. They head out into the empty hotel and then the silent streets.
Secondly, the sequence itself is actually ice cold. We don't hear the sound of them making love, or even talking; the sound track is elegiac music more suited to closing credits. It starts with the "scale" theme that played over Christine's death. The Baxters are making love together, but each time they're seen responding to each other's love making there's a sharp cut to them getting dressed separately (we don't see them dressing afterwards, although we know the shots are from "afterwards": the lovemaking and the dressing are intercut from the outset). In those shots of them dressing, you only once see them both in shot, and in that brief shot John is walking past the door and does not pause. They don't speak to each other, and their expressions are mostly deadpan. John, finally, chooses a tie, puts on his jacket and adjusts his watch before pouring a drink. He looks broken, not exultant. Laura seems to be happier: she tosses the lipstick in the air and smiles. But is that because of making love, or because she has been given the promise of Christine?
For one brief moment, they have been able to put Christine's death aside, but that fantasy will kill one of them.
It's a staggeringly good film. The lovemaking scene is utterly crucial to the film, and that it was shown on BBC up until 1983 which that sequence cut shows just how stupid censorship can be. But, seriously, you just can't read that scene as about reconciliation and redemption, and to suggest it as a film for the OP to watch given her situation seems odd.