I'm thinking that Anton must be an efficiency expert, he doesn't believe in wasting any time whatsoever.
On Wednesday evening/night, he initiated sex three times.
The first at 22:19 it was just under four minutes from panties off to foreplay, fuck and finish. Penetration time was under a minute and a half.
Next, at 02:24 it was a similar four minute exercise with penetration of just over two minutes.
Thirdly, at 04:10 he stretched it out for about seven minutes (mostly trying to get it hard enough to penetrate) with penetration at two minutes.
In none of the three attempts was he truly hard (the first was closest) and obviously, Nastya was left frustrated in all three acts.
Maybe Nastya can refer him to Lou for some lessons and a supplier of condoms and whatever else he is using.