Getting a Task when you don't expect it

UserService.cs

public class UserService
{
  private readonly IUserRepo _repo;
  
  public UserService(IUserRepo repo)
  {
    _repo = repo;
  }
  
  public async Task<bool> DoesUserExist(int userId)
  {
    //some async method, which is awaited, so no compiler warnings
    var something = await _repo.SomeMethodAsync(userId);
    
    // GetUser is an Async method returning a Task<User>
    var user = _repo.GetUser(userId);
    
    // Oops, this is always false
    return user == null;
    
  }
}