Many people in the world are naturally independent. They only rely on themselves for support and can get through anything you throw at them. However, in a relationship, people are always told to keep their walls up and stay independent as they are. It's like an unwritten rule that you 'shouldn't be clingy or annoying.'
A relationship is definitely a two-way street, but everybody loves differently. Some people may show their love with a, "Be safe and call me when you get home." While others show their love through bigger gestures, such as buying a present for their partner on a holiday/anniversary. Everybody is different, but you cannot tell someone how to love. Loving someone is not something you can teach. The way people show their partner what they mean to them differs in every relationship and that is okay. Whether it be small "Good morning" texts or cuddling together while watching T.V, there is nothing wrong with being yourself.
It is okay to be considered 'attached,' 'clingy' or 'extra.' Your partner should love you for you and appreciate the way you love them. How you show love should not change based on who you are with. There is no harm in being madly in love. It isn't exactly anyone else's business anyways. If you want to spend every waking moment with your partner, do so. If you want to have alone time, do so. In every relationship, there is a spot where both of you can do things as you please, but at the end of the day, you are still a team. If your loved one tells you that you are being too 'clingy,' leave. Leave because you deserve somebody who will love you for being 'clingy.' Every relationship needs intimacy, whether its something as small as a hug. You are allowed to love somebody fully and want to spend your time with them, always. There is no reason why you should be ashamed for the way you love.
In the end, be as 'clingy,' or as 'extra' as you want to be. Nobody can tell you how to love in your relationship, and nobody should make you feel ashamed for it.