Well, it's not exactly boredom. Life together becomes a regular,
pleasant routine, definitely not like that crazy, heady courtship
days when you can't bear to part with each other at the end of
weekends. I won't exactly miss a warm body (and a snoring one) in
the short-term coz I'll have the bed all to myself. 
Life need not be boring if you can find things to do
together...simple things that we enjoy, like going for a ride, or
to the library and have coffee and eat huge amounts of chunky
potato, or take short trips. I find doing things together, and
having shared memories are very important. Then you won't run of
things to talk about. 