This breed should be very up-on-their-toes. To oaraphrase a breed judge, "like they expect at any minute to see something new and exciting." I've peeked at my dog out in her run from time to time, and if she's not snoozing in the sun, she's usually just sitting on her table, watching for squirrels. Even my older dog is very "up" when she's outside, because she knows there may be an opportunity to chase rabbits or run off a stray mutt.
If she's intact, the extra-loving and wanting to sit on your lap could be related to heat cycles. Or she could just be a love-sponge bulldog.