Be aware. getting another glider is the best thing you can do. but there is not
a 100% guarantee that the gliders will accept each other.
we had about 10 successful introductions, but I had a colony of 6 that used
to be 9. I tried to add 2 more to the 6 and the male alpha of the colony would
not accept the 2.
but with yours being alone, I'd put introductions, after the proper scent
training at a 99% chance of good results.