They seem like one of Hollywood's happiest couples, but Gwen Stefani and Gavin Rossdale may be headed for another rough patch — Courtney Love recently announced that she had an eight-month affair with the rocker while he was dating Gwen! "Man, he was such an Adonis in his day. He got good in bed… something happened. Maybe Gwen taught him, for all I know," Courtney told Howard Stern yesterday, adding that he was also having sex with "a few other people" at the time, as well. Gwen and Gavin have been together since 1995 (they wed in 2002) and have weathered cheating rumors before. They have two sons, Kingston, 3, and Zuma, 20 months, who Gwen credits with strengthening their marriage. "We are closer in many ways now that we are building something together outside our own crazy relationship," she has said.