Creve was an active politician from an early age.
In 2009, when Belgium finally was free of British occupation, Creve becomes a citizen, joins 'Vlaams Gezond Verstand party, and eventually becomes Co-President of Belgium in March 2009 alongside Palodigon. In March 2009 Congress elections, a lot of Congress member positions were taken by Spanish citizens, therefore, Creve decided to cede all Belgian territories to the Netherlands on the April 5, 2009, forming a union and preventing a Spanish president from being elected.
During the United Netherlands period, Creve continued to be an active politician. Some of the prominent positions he held during this period:
- 4 terms as Party president of Gelijkheid Vrijheid Democratie
- 9 terms as a Congress Member of the United Netherlands
- Introduced Congress Rules
During his last term as a party president in Gelijkheid Vrijheid Democratie, he suggested to the members to merge with The libertarian party, where most of the members moved to what was known to become an unofficial merge of the two parties.
GVD Partijblad was the newspaper owned and published by CreveRoeland. There were almost 100 readers subscribed to this newspaper. Later he renamed the newspapers to .