Is the Once Upon a Broken Heart series clean?

[ocean ☆ (jacks’s version 🍎)]

I really want to read them but I don’t know if they’re clean or not. Kissing is fine just as long as it doesn’t go beyond that

[Xingyin✨the crying]

My sister read them and she says it doesn't go beyond kissing, they are clean.

[ocean ☆ (jacks’s version 🍎)]

Ok cool, thanks!