You have to love yourself first, before you can love another. If you enter a relationship and give up all the things that define you as an individual, you are not giving yourself the love that you need. Sooner or later, if you lose your identity, if you stop giving to yourself, you will be unable to give to your relationship. It's important not to confuse identity and individuality with flexibility in your relationship. Individuality is about the things that make you who you are.
Flexibility is about compromise.
Compromise will always be necessary in any relationship that you have. In order to compromise, you have to be committed to honest communication of your feelings and needs at all times. In building a life together, problems will arise. Problem solving through honest communication is the key to building a mature, loving relationship. Neither you nor your partner should give up anything that makes you the unique person that you are.