Lily would be tickled pink to be the only dog in my life again.
That said, she is very bonded to Scout and takes good care of her. Even if she can be bitchy and guardy about things like waiting for me to scoop food. She's that way toward every dog though and it just takes regular maintenance of impulse control work.
She adores my parent's BC and she is the one dog he truly loves to all out play with. Its adorable.
She loves my friend's dog Chicago whom we periodically babysit. He can be a jerk hound to everyone at times, but overall they've lived big chunks of their lives together happily. They play a LOT, as do he and Scout. I would say he and Scout are more bonded than he and Lily.
Scout is unhealthily in love with Lily and her other close dog friends (primarily Chicago, my parent's dog, and Lynley). She is always willing to concede the point which is probably why Lily likes her as much as she does. Sometimes she gets over-aroused by housemates/friends and won't stop barking even when I interrupt her (this is MUCH less frequent these days), so for example my parent's BC will loudly air snap. Its weird because its like that part of regulating Scout has become part of the three of theirs' game... goofy dogs!
She doesn't live in this area anymore, but my good friend's dog Lynley is pair bonded to Lily. Luckily we've been able to get them together a couple times a year. She let him overnight with us last time she and her hubby came to visit. Zero adjustment period despite how long it had been.