Adult calendars stop overlapping
A film opens on Friday. You message the people you usually ask. One is away, one has dinner, one has family plans and one can make next Thursday when you cannot.
Nobody has done anything wrong. Work, relationships, children, travel and existing commitments simply make spontaneous overlap less common.
Do not turn a scheduling problem into a friendship problem
It is easy to read repeated 'can't make it' messages as a sign that your social life is disappearing. Often the friendships are fine. The logistics have changed.
That distinction matters because it lets you solve the real problem. You can protect those friendships and still stop depending on them for every film, restaurant or event you want to attend.
Build plans that can survive without the group chat
Choose the film and time first. Ask friends if you want to, but do not make the entire outing conditional on everyone aligning.
If you would enjoy company, Costar adds another route: find out whether someone compatible independently chose the same screening.
Keep existing friends and add new weak ties
Meeting one new person for one specific activity does not replace your close friends. It expands the number of people with whom a particular plan could work.
That is especially useful in a city where many adults have rich lives but fragmented availability.