Like I said before, the first 2 scenes for Cherry are at the beginning of the game, you have to make different choices to unlock them.
The third one is in Selina Solo Path, you can't help Tana take a shower and have to reject Cathy too.
The fourth one is in USA Harem, you must break up with Ella in that path.
For Kylie scene, you have to choose the USA Harem route and then choose "Make an excuse and leave" when talking with Riley.
For Selina and Veronica's scene, you have to choose the Selina Solo path:
The first you posted for Selina, you need to stay with Veronica and reject her.
The second one you have to not help Tana take a shower, stay with Veronica and accept her feelings.
The third one you have to ot help Tana take a shower and reject Cathy.
The Veronica one, you need to not help Tana take a shower, stay with Veronica and accept her feelings, then you need to accept Cathy.