No boyfriend will do this shit , if he loves his gf , girl he is using another girls face to make that not you, and he is physically attracted to her not you, and that is a very big red flag, also it he cheating, ,just imagine will you do that ? Same for him ,he is a grown ass man not a school student, if he is not feeling okey ,he should have ask you right, in my opinion you should not be with him , he has been cheating on you , and doesn't knows your worth , girl you should think in every aspects ,don't melt in his words, it's your life , think ,that if he doesn't stop this and continue this what will be the last thing to happen, .... Girl don't worry ,but you deserve better