Responses
I didn't think it was the scene rape, of course it started well like: what are you doing Dojin? But I think the fact that Hyesung is tsunderê that makes it react like that and I agree with the analysis Alleons posted above ...
Now just because they're married and being their honeymoon doesn't mean Hyesung is forced to have sex with him. There is also rape in marriage, consent is required.
Someone need to explain dojin that forcing sex on someone who's asleep is a big no no