I can understand this. My wife rides so for the past two years I pretty much haven't ridden alone.
My best friend who is usually the third rider in this group had an accident two months ago and totalled his bike and busted his hand up so he hasn't gotten back on the road yet.
My wife was out of town this weekend so I went out alone and on one hand it was nice to not have to worry about other riders...when I wanted to pass I passed etc....but after a while I did get a little bored...just not as fun alone imho.