My mind

i want input.a friend of mine is in a long distance D/s relationship. They are in love and in my opinion so perfect for each other. He is her first Dom. She went through a rough relationship prior to meeting him and came out of it with some trust issues. So recently she found out her Dom has done some online RP and she’s super hurt and has considered it cheating. In the beginning he made it clear he likes to RP and she said it’s not a hard no but also not something that she has an interest in doing. Now due to her trust issues she already had she’s not sure if she should trust him when he says he won’t do it again. She feels like he could have talked to her about wanting to do it and given her a chance to maybe try. So opinions...do you think it’s cheating or is it acceptable? What would you do in this situation?