You better have some real work waiting for a truck like that. How about climbing in and out for you and your honey? It is a thirsty beast and at over 100K, expect bearings an seals to need possibly need attention. Do a compression test on all cylinders and smell the oil in the engine and transmission for any burnt odors. Check differential levels to see if they were maintained. Of course, check for collision damage. Check for tire aging (cracks), brakes and shocks condition.
You should get a good reduction in price for such mileage. If after your inspection and drive test, you are are still prepared to understand that repairs may be needed, then go for it.
But most of all....be certain the truck is actually what you want and need. Don't be impulsive.