Stress from Sexual absence / abstinence

Hello, hereby I'm asking related to a member who face difficulties about sexual absence / abstinence.

So her boyfriend for religious reasons decided to stop having sex with her until marriage, and despite she used to think she will be alright but now she feels that the needs give her stress. She tried masturbating but she also said she hate to do it. She had try to speak this with her boyfriend but her boyfriend stays with his opinion. She loves her boyfriend and want to stay loyal with her feelings.

So here as a listener I want to ask another listener for advice regarding how to taking care of this stress. How to reduce the needs by doing a self therapy.
So if anyone knows a self therapy or a way to help about taking care this needs please do reply to this thread.
Thank you, I appreciate for anyone who this thread or willing to help :D

Have a good day!