This happens so very, very rarely that it's practically a non issue.
The Eastenders storyline is that the girl got drunk, flirted with two guys and went to bed with one of them consensually. She went to sleep/passed out and when she came to, the other was on top of her. Assuming the facts of the case as presented to the viewers are correct, then that is rape even if she was snogging him earlier in the evening.
Even if 5% of rape claims are invented, that means 95% are not. And it's the guys you're worrying about??
Ah, the Ched Evans case then.
The greatest trick the devil ever pulled was convincing the world that he didn't exist
20 years ago, when newly single I never had this problem, first time sex I always let the girl 'lead'. If I felt they were unsure, I would just leave it at that. If I was fully engorged, off to the bathroom for a wank, simples. If I was pissed beyond reason then sex wouldn't be happening.
If she wakes up in the morning and sees that your more Jeremy Clarkson than Jeremy Renner and claims she didn't consent, you're still stuffed.
The greatest trick the devil ever pulled was convincing the world that he didn't exist