Actually, from a female point of view. Any girl has a love of beauty, and a handsome boy with a great figure will have no resistance, but this is only out of appreciation of the opposite sex and does not conflict with his boyfriend. It's like boys will appreciate and praise other women even if they have a girlfriend or wife. You mind because you care about your girlfriend. So, I don't blame you. In that case, there is no need for your girlfriend to accept the blame. As an adult, she has the right to make her own choices, and even if there is an accident, she has the ability to bear it. But as your girlfriend, you should tell her that you have the right to care about her feelings.
In real life, there are many news or reports that male private churches are prone to ambiguous physical contact with female students, which is even more unbearable. So you are right to worry. You should communicate well with your girlfriend. You tell your scruples and let your girlfriend tell you why she wants a tutor. If she is persuaded by you, the problem will be solved, if your girlfriend gives you a reason to accept it. You are also willing to let her find a tutor. At this time, you should be diligent. For example, go to the gym with your girlfriend and see how her personal education is. If you feel bad, you can accompany your girlfriend to class, or you can take her back if you are busy. Otherwise, your girlfriend has been abducted, and you are also responsible.
Speaking of such a problem, I'm afraid I have to say that this boyfriend is a straight man with cancer. Because people who care about you are people who always care about you, your girlfriend may say that you think too much, and it won't be like this. Maybe your girlfriend is sincere and grew up protected. She doesn't think the world is what you think. She feels that the tutor she is looking for is more reliable, or recommended by a friend, so don't worry, and she feels that as long as she behaves well, others will not look for her. If your girlfriend is like this, her boyfriend may be more worried. After all, human growth is not rapid.
Looking for a tutor, some people say they don't need it, others say they need it. I have been working out for two years and haven't found a personal trainer yet. But as soon as you go to the gym, I recommend that you find a tutor to take classes, but I insist on not taking classes, which I think is mainly a bit expensive. In fact, if you know people in the gym, you can also listen to their opinions. After all, many TV stars are also looking for tutors. Some personal trainers are very professional, which may be better for your strength training, abdominal muscles and the like. Of course, you can persuade your girlfriend to find a tutor.
I hope my answer is helpful to you.