You must refuse him, and you must not promise (provided that you like your boyfriend). But don't tell your boyfriend. If you do this, his brother will definitely turn against you. Now your boyfriend likes you very much, so he will turn against his brother. After spending a long time with you, he will think, "Is it worthwhile to turn against your brother for women?" Then he will quarrel with you or something, you will pretend that you don't know anything, you will pretend that you can't see the short messages he sent you, and don't have too much contact with him.
After all, there is no airtight wall in the world, even a little contact with your boyfriend will make you jealous. If he sends it to you, just delete it. For us men, brothers can be for life. What about women? Ha ha!
We are still young, and a lifetime is too far away for us. Of course, when you grow up, you must find a lifetime, but you are not sure that the woman for life is you? ?
It's useless to refuse online. You can communicate with him directly.
You said to leave me alone. You can tell him that if you harass me, I will tell my boyfriend or something. He treats your boyfriend as a brother, so he won't bother you. After all, we loyal people know that a friend's wife can't be bullied! Friends are like this, not to mention brothers?
Don't tell your boyfriend yet, it will hurt their brotherhood. You might as well solve it yourself first. Tell your boyfriend's friend that you only like your boyfriend and have no interest in him at all, and ask him to give up. And I don't want to receive such information again. Tell him that you don't want to hurt his feelings with your boyfriend because of this, that you have always regarded him as a friend, so this time it never happened, and then tell your boyfriend when you receive it. In most cases, he will be very interested.
3. If you really can't tell your boyfriend directly.
You have to make it clear to his buddies first that if you want to harvest perfect love and real happiness, you both have to treat each other sincerely! First of all, you should finish with his buddies early, or it will be bad for anyone after a long time. If there is any misunderstanding, it will be even worse! Anyway, you must cherish your lover!
This kind of man is not authentic. When you can't solve this problem well, you should tell your boyfriend. Making friends with such a man will be betrayed by him sooner or later. Don't immerse yourself in this unhealthy ambiguity, which will only harm you and your boyfriend.