Increased libido is a good thing. If that’s what’s happening with you that’s good to hear.
I know it’s harder and sometimes impossible for some men to climax on many of the SNRI’s and SSRI’s.
This from wiki on Cymbalta: Metabolism-Liver, two P450 isozymes, CYP2D6 and CYP1A2
I have almost no CYP2D6 activity so unfortunately this drug probably would not work well for me.