When we find nowhere to vent our insecurities and anxieties, we'll always have each other.
Friends may not be an option due to our ego and pride while parents are definitely not preferred for obvious reasons - they are getting old and already have too much on their plates. Your other half listens and empathizes, never judging while understanding you better through your difficulties and dilemmas.
So don't hesitate to share your worries with him/her and gain the strength you need from his/her relentless love and support! <3