Add Friend and Private Messaging Script

Hello I need a script using following features. but remember we want PDO connection system not MYSQL or MYSQLI so all queries will be different 1. We already have Registration and Login System using PDO connection procedure 2. We will give the Login Session Variable to you to auto login 3. When user login then we display user profile so we want to add a small block in Header or Somewhere and we use bootstrap and jquery for our profile so just you need to create a block which we can add in user profile anywhere using include or require method and var should not conflict with our already made user profile 4. In block user will have option to Add and Send Message Button 5. On Add click user can send add request to another user. it should be using Ajax and on spot nothing move 6. Afte send request that button will convert in another button request sent and will have drop down to have 1 more option to cancel reqeust 7. If user click on cancel the reques will be cancel 8. Another user will get his request and a small block of showing his all friend request in right side in a block same like facebook 9. This frind will have option to cancel request or block user. if the person block the user then another friend never can send him request 9. All users will have another button on send message on another usrs profile to send messages 10. They can send messages to each other 11. Messaging system will have following features 1. Can Reply 2. Can Delete 3. Forward Message (To only Already Added Friends) Overall we need a complete Friend System + Messaging same to Facebook and full be in block and PDO connection in PHP by which we can integrate in our already made system. No need to make big pages. just make new pages for messages. also we have bootstrap responsive blocks so your messages page should be responsive too. we will give u our code.