The two are related but not necessarily mandatory for each other. You can be affectionate w/o being sexual. Anyone with children understands this. You can still be affectionate with your LDS.
Just how, I haven't figured out yet - although I'm trying to work with 1-Cor-13 (Love is...). That is, to love my wife, be nice, supportive even if I don't ever get to ML again. It is to take a bad situation and make it as sane as possible. My spouse's behavior or shortcomings are no excuse for me not to act properly (ie affectionate) towards her.
One message this may give to children is that in your opinion the child is worth everything you've done for him/her.
This is unconditional love - and it's gotta be the hardest thing I've ever attempted... with lots of "one step forward and two steps back" scenerios. But, I feel like I've tried everything else.
