Please someone tell me what i should do with this crush?

ive had this crush with this boy i met since i met him. he made me laugh and was cool. but now he said that he was going to change like change everything . his going to be goth or emo and is going to change. he wont be the same guy i knew and that makes me sad cause i thought he was different from every guy i know thats a show off. what should i do?