Gyms are service-oriented and the business model is customer-oriented. First of all, you should be confident. Don't feel helpless just because he is a manager or something. In his words, after a long time, the problem remains, because if you don't let him back down, he thinks you are acquiesced to some extent, which will be very dangerous! Some things are best to nip in the bud! Also, if you have time, bring your boyfriend (husband) to accompany you several times and let him know! I hope my answer is useful to you.