This is from the official Lifehouse Forum on the homepage of Universal Holland:

MTV Holland confirmed the rumor: Lifehouse will be supporting Bon Jovi on their European Tour in May/June, here are the dates:

Sun, May 25 Erfurt Steigerwaldstadion
Wed, May 28 Vienna Ernst Hopel Stadium
Fri, May 30 Gelsenkirshen Schalke Arena
Sun, Jun 1 Mannheim Mainmarkplatz
Tue, Jun 3 Amsterdam Arena
Fri, Jun 6 Bremen Weserstadium
Sun, Jun 8 Ostend Hippodrome
Wed, Jun 11 Zurich Letzigrund Stadium
Fri, Jun 13 Munich Olympic Stadium
Tue, Jun 17 Neumuenster Eintracht
Fri, Jun 20 Dublin Landsdowne
Sun, Jun 22 Glasgow Ibrox Stadium
Tue, Jun 24 Wolverhampton Molineux Grounds
Thu, Jun 26 Manchester Old Trafford
Sat, Jun 28 London Hyde Park

No word if Lifehouse will play all the dates, but I don't see why they wouldn't.

Yay for all the Bon Jovi fans lol....

If you were planning on getting tickets, too bad. As far as I know most concerts are already sold out.