Inclusion criteria include:  Age > 40 years Clinically localized prostate cancer (American Urological Association Grade Groups 1-2; cT1c or cT2a-b; PSA < 10) without clinic or imaging evidence of localized extra-prostatic or metastatic disease (i.e. AUA low and favorable intermediate risk prostate cancer) International Index of Erectile Function (IIEF) of ≥ 21 points at baseline (no or mild erectile dysfunction) Patient-expressed interest in consultation for sexual function (erectile function) preservation/ optimization Planned bilateral nerves-paring prostatectomy  Exclusion criteria include:  Moderate or severe ED based in IIEF criteria (score < 21) History of prior pelvic or penile surgery Current or prior androgen deprivation therapy Planned non-nerve sparing prostatectomy