David Boreanaz fans will soon be touched by more ”Angel”: The WB plans to rerun episodes of the Monday-night drama at 8 o’clock Thursdays beginning Jan. 10. It’s also a good sign The WB may stick with the ”Buffy the Vampire Slayer” spin-off — though if it cancels ”Angel,” UPN is obligated to pick it up as part of its $102 million deal for ”Buffy.” Still, WB insiders say the net has all but announced its intention to renew the series for a fourth year. In the meantime, it’s hoping to lure new viewers on Thursdays by beginning with the final four episodes of last season, when ”Angel” started to establish itself as a freestanding drama rather than ”Son of Buffy.” ”We now feel like we’re in the first season of the show, because in the first two years we were busy finding the show and building the characters,” says Boreanaz, whose title vamp actually fathered a human last season with fellow bloodsucker Darla. ”Now everything is falling into place.” So are the ratings: The drama has scored a whopping 35 percent increase among 18- to 34-year-olds since last season. Speaking of scoring, Angel may finally get hot and heavy with Cordelia (Charisma Carpenter) this February, when the two inhabit the souls of young lovers in an episode that takes place at a ballet. Can you say happy feet?