I Love You, Man

Visit Jack and Gunter in the Port Area near the Main Pier.

Comes after

• More Portal Parts — Convince Jack to give up his portal fragment. He's normally at his Town Workshop.
• Why don't you like me? — Bring lots of to Gunter in his Astrologer's Tower

Leads to

• I Love You, Man — Give the Small Printing Press to Gunter in the Port Area near the Main Pier.
• I Love You, Man — Bring the Prosthetic Hand to Jack. He's with his friend at the Port by the Main Pier.