Just get on the bike and go, but only for a few miles.

I get the same way after I've been away from an activity for any length of time--the dread of taking it up again (even something I *love*) is overwhelming, and I've found the only cure is to just plain do it. But don't overdo it--you want to get on the bike for long enough to remember why you love it, but not so long that it becomes a chore. I went on a year-long bike tour at one point and when I got back I rode my bike for two days, then put the bike away and didn't get on it again for 7 years! Then I did practically the same thing all over again--I stopped exercising at all when I had kids, so the bike sat in my basement gathering dust for another 9 years. I just pulled it out again last year and have been riding regularly since then, but I very nearly didn't--I kept coming up with excuses for not riding (it's too hot, it might rain, it's too cold, I've got errands to run and laundry to fold). Mind you, at that point I had been working out regularly for a few years, so I didn't have any fitness related excuses.

The other approach is to sign up for something fun and do-able, but something that requires at least a little bit of regular time on a bike--something like a 25 mile charity ride. Deadlines are great motivators!

Sarah