Oh, it seems that he is a possessive person. You have to ask yourself whether you want to be boyfriend and girlfriend with him. If you really don't want to, you should reject him directly and repeatedly, and don't let him have illusions. It's good for everyone. If you don't decide your relationship with him quickly, it's easy to misunderstand, and the longer it takes, the more difficult it is to deal with. Be sure to handle your relationship as soon as possible.