Seems that rehab had a positive effect on Lindsay Lohan’s dating life. Maybe she’s coherent enough now to actually hang on to a man. But oh, the list keeps growing.

Who knows what’s up wiht Riley Giles, but now Spencer Guilburt, a “graphic artist” and “actor” says he’s spent some time with Linds. He says, “I’ve seen her a lot since she’s been home, and expect to see me with her more.”

Umm, want publicity or what, man? He won’t say if they’re actually dating, though. His smug reply? “If I’m dating Lindsay, Lindsay will let you know.”

He says being with him is a good thing for her. He says he isn’t into booze and doesn’t use “substances”. He’s helping her…