The OP is getting sweary and angry because she is being disbelieved and shut down, and people are minimising her stress and worries. So quit the 'why U so angry?' bollocks! 
@cockapoomummy many women have been through similar, and have great sympathy, and have your back. Please don't take any notice of the posters dissing you and basically calling you a liar! 
I do agree a bit with the poster saying you should message him telling him to fuck off and not contact you again or you will tell his wife, but then again, he could tell his wife that YOU came onto him before you get a chance to let her know what a pervy, stalky twat he is, (by forwarding his creepy-ass message!)
The victim-blaming on here (from some!) is a disgrace. The OP is NOT in the wrong here. 
Why are these men suck utter fucking stalky bastards?
Because SOME men (not all!) are entitled, misogynistic bastards who think women are here to serve them, look pretty for them, and entertain them, and many of these type of men do NOT like rejection.
It must be so lovely for those of you who have never suffered abuse, harassment, stalking, wolf-whistling, catcalling, and lecherous looks from men!
Don't call women liars who HAVE had to tolerate a shit load of this though!!!
@MissVanje
It’s perfectly fine and normal to be angry and put out at being dragged into this man’s disrespectful treatment of women in general and his wife in particular. The amount of people implying that op is somehow complicit in or responsible for this situation because she tried to send a nice easy breezy brush off to an unsolicited comment about her arse is staggering!
All of this! No wonder some women don't report sexual abuse/harassment, and stalking. It's bad enough that it happens, without being disbelieved, and accused of encouraging the stalking and harassment!