I like the "tease" photo(s), then Julia being the one to admit to the kiss.
It's a different feeling, build up not actually seeing the kiss, yet, compared to other similar stories.
So, maybe, Vika (or Julia) sends the actual 1st kiss render to Patrick in the next update.
With Markus in the living room, I could see Vika (or Julia) teasing Patrick with that photo and whether she sends it to him or not... That would certainly add some tension, angst to what is, will, or could be happening.
There's no camera in the bedrooms. So, how badly does Patrick want to know what's really going on...
There's also a part of me, that thinks not showing the kiss is part of the "game", the tease, and both Vika and Julia are just messing with Patrick. Playing into his fantasy without actually crossing over... I don't think that's likely to happen in this story. But, it's certainly a good path option, if the dev wanted to use it...