Are Celebrity Hook Ups Publicity Stunts?

The recent rumours of a hook up between hip hop mega star 50 Cent and Crunk n’ B vixen Ciara have raised the question of whether celebs hook up simply for the publicity. This hook up comes hot in the heels of Ciara and Bow Wow’s recent split. 50 Cent himself went out with movie star Vivica Foxx. Other notable hook upee’s include Jay Z & Beyonce, JD & Janet Jackson. Now, the question we are asking is; do celebrities hook up simply to raise their stock value? Are these hook ups purely publicity stunts meant to increase media coverage and ultimately sell records? What do you think?