We're just assuming he's lonely because he isn't out with someone all the time. He's had a couple of very public relationships. Maybe he's just being a bit more private. Also, why does he have to be lonely if he isn't with someone? The pictures we've seen lately aren't necessairly pics of a lonely guy. He just isn't doing the faces and the comedy that we've seen before. So what he's by himself. Maybe he's just taking some quality Jim-time.
So I pretty much rambled there and agreed with what other people have said...
I see my fiance maybe one day every two weeks or
for a few days during the weekend.
Sometimes being alone is great for the soul.
Kind of reawakening of the mind.
Time to meditate.
Sometimes things are better when you only see someone
once in a while.
Not really much hide the relationship-cause poor girl is going to feel like he is hidding something, but defenately keep it on the low, so that the girl can have her normal life!
I think he loves himself via his 60 minutes interview with Steve Croft, and just like Englebert Humperdinck sings, "I may be lonely, but I'm never alone......and the nights may pass me by, but I never cry"....