Advice needed from all...

My SO and I have been together for awhile. We have 3 amazing children and we do want more. I myself am madly and deeply inlove. I still feel all the lust in the world and still get butterflies with when he flatters me. But i get the feeling thst he's bored. That my man wants or is craving more... if that makes sense. What can I do to make MORE happen? Any suggestions? I guess im just not feeling good enough at this moment. Need to know what I can do...