trouble ejaculating

How important is it to see a guy ejaculating when having sexual play? And does this put you off if the guy doesn't ejaculate? Happy to discuss this in private messages if you prefer.

Very recently I’ve had difficulty climaxing during sex and even masturbation. I know lasting along time is typically a good thing, but sometimes I am not able to cum at all. I had sex with a girl I met recently last night four over 3 hours and she came five times and I couldn’t blow my load. I...