Conclusion
This should serve as a lesson to all couples!
Look at how troubled she was at first about her compulsion to exhibit herself. Her main concern was with her boyfriend. All of that time her boyfriend was hot for the very same thing, but the two of them had not had the nerve to tell each other!
Couples must talk to each other and be honest and open! There will be no way of making up for the time that Inna and Peter lost.
The fact that the two of them are so hot for themselves and pay so little attention to their sex partners may also be to blame for their not noticing that they were into the same trip!