At all times, the best thing is to remain your best and real self. So, I don't support the idea of changing for someone because someday you're gonna get tired of being someone and then your relationship will be the painful price you will have to pay to come back to your real self again. If they truly love you, only a positive change from a negative one will be neccessary but then even without you changing they would still accept you or stay out.
Rayy