No two erections are identical. It's very special when a date is receptive to my suggestion that he masturbate to completion for me. It's intense watching him approach climax and then ejaculate copious, warm sperm over his fingers and hand.
After a first date after inviting him in, I enjoy downloading a video of myself fully clothed around the house - and I request that he masturbate for completion for me like this sensual video. Then I bring up some of my XH favs and masturbate for him with a pebble vibrator to completion. What a joy for both of us! Mutual masturbation is underrated.