Consolidate and Concatenate by Creating Columns

I need to consolidate rows into a single row, adding columns as necessary.

Problem:
ID relation name date
68540 Your loved one Agnes A. Schmidt 9-Aug
68540 Your cousin Emry 25-Sep
68540 Your friend Charles 4-Oct

Desired Solution:
ID relation name date relation2 name2 date2 relation3 name3 date3
68540 Your loved one Agnes A. Schmidt 9-Aug Your cousin Emry 25-Sep Your friend Charles 4-Oct

There are over 35,000 rows that I need to consolidate.