^well, she's a bigger star now than she was when she was dating Culkin, so she gets papped way more often nowadays and we get to see her in her private time
MTE. It's not all that different from when she dated Culkin. They were papped a lot and yet a lot of people didn't know about their relationship until they broke up since Mila didn't talk about it. She's getting papped just as often with Ashton than she did with Culkin but given their history, how attractive Ashton is, etc, it's getting more buzz.
Also, for the Ashton haters, I wouldn't consider myself a "lover", but you'd be surprised how your opinion can change by watching a few youtube interviews. He makes 700k per episode of TAAHM, is a producer and owns his own production team, has stock in various businesses, and is ahead in all things technology. I used to think he was a real life dbag Kelso, too, but he's very intelligent.