Hi Ewan,

If you have the applicable plan to edit your HTML, we have this in our banner to show "Edit Profile" and "Logout" when user is signed in.

					<nav class="banner-nav mobileLogin">
						<!--{{ portal | welcome_navigation }}-->
                            {% if portal.has_user_signed_in == true %}
                            
						<a href="{{ portal.profile_url }}">Edit Profile</a>
						<a href="{{ portal.logout_url }}">Log Out</a>
                            {% else %}
                          
						<a href="https://www.desouttertools.com"> Desoutter Home</a>
                            {% endif %}		
                 		
					</nav>

For your case you could do something like 

                            {% if portal.has_user_signed_in == true %}
                          <div>
                         <h1>You've already logged in silly!</h1>
                          </div>	
                            {% else %}
                          <div>
                          Your login form goes here
                          </div>						
                            {% endif %}		

 Good luck, hope it helps!