Loving a person purely is the best thing. Today's generation is having trust issues at it's peak, not because they don't trust but their trust has been broken already. Don't let this trust issue take all over you. If don't trust your partner, you don't love him/her. Communication is the key. Stop communicating and you'll your relationship failing. NEVER CHEAT because you are not cheating on your partner here but you are telling yourself a lie and DO remember KARMA.
I am writing all this because I am reading book here, on wattpad, sexualizing and romanticising this sh1t. Don't defend by saying that you just read it and will never cheat. No girl, you are learning from these things. If you wanna end the relationship, directly say to your partner's face.
*I am writing all this because I felt extremely sad after reading a book in which a person was cheating.*
(I love him so much)