The former Hairspray star, 41, has been dating around since the end of her 10-year marriage to artist Rob Sussman in 2003.
But Lake admits she is struggling to get over her latest split because it's still too fresh.
She says, "I'm recently heartbroken but I'm OK. I'm better than I was yesterday."
Lake, who has two sons with Sussman, refuses to identify her now ex-boyfriend, but confesses she likes a younger lover with financial stability: "I'm kind of a cougar, they have to be (at least) 30-something, with a job! I don't want them to take care of me, I just want them to take care of themselves."