For a lot of people a romantic relationship is a relationship that is just really close and intimate, someone they trust and can talk to and who will support them and the sex is just a way that they share that love they have with each other.
Some people have those relationships without the sex, some people have sex without those relationships.
None of it is really right or wrong. You might be asexual, demisexual, aromantic, you might not have met the person you want to have an intimate relationship with, all of those are fine and valid.
Be yourself, love yourself. ❤️