Shaven genitals (46m) before giving a massage

So I (46m) and a massage therapist potentially have a long time female friend of mine as a massage client later. We know each other 30 and are the best of friends. She needs a deep tissue massage and might be coming to me this afternoon. She has absolutely massive breasts that I dream of getting to see in the flesh
We have started flirting and flaunting a bit and so I shaved my genitals earlier in case anything happens.
I started to get aroused my shaving and had to resist the urge to masturbate. But now for the next few hours my shaven shaft is rubbing off the inside of my tight pants.