With such a beautiful nipple, I'm sure he will devotedly suck like this everyday. Watching it makes me aroused. Imagine how aroused he'll be watching this nipple erect under his warm, hungry tongue.
She really enjoyed the tip of the tongue flicking and circling the nipple with pauses in-between around 5.16 the most, judging from the stronger nipple erection suddenly. The tip creates a more arousing sensation and the pauses create anticipation
The view at 5.06 onwards is most exciting. You can see the nipple experiencing the most arousal with deep swelling from contact of the tip of the tongue playfully licking.