Well there is a possibility that this change could be for good, right? I mean not a drastic one, but many smaller ones that might make you a better person. I don't think that it is necessarily bad to "lose" some of the bad sides of one's self. I would like to be romantic and tgink that love can change you and your life for the better. You might get heartbroken and it hurts a lot I know but maybe at the end of the day, become less vulnerable and realise some things and understand things a little more.
@rodiziketan I think that there's so many people I knew in school and still know that need to learn this...when they're in a relationship they're 100000% in, which is great, but it gets to the point where they're changing, too because of it. and not being who you are or stupidly changing yourself because of a relationship inst' the way to go. you can define some parts of you based on your relationship but you need to exist for yourself, too.