the whole sex question

im going to dubai soon and this old buddy of mine in dubai plans to set me up with this chick there knowing i havent gotten any action in all this time. but the thing is iv never had sex with anyone but my ex. i mean iv made out n gone to base n all but iv never actually had sex with anyone but her.
I dont know what its gonna be like, like im not worried about size or performance or any of that cliche shit i mean whats it really like after uv made love to one person for so long shared such a sacred bond with them how du just go on to do that with another? would that be desecrating that persons memory?
if it was good or maybe even better than what you had would that be an insult to your love for that person?
how do you justify the act to yourself? do you label it a basal need? label it as my friend bob did as an adventure?
maybe you can tell people you hadnt "gotten any" in a while or that ur just a bastard and a guy and ur wired that way and all that shit you see on tv. but how du lie to yourself how du tell yourself that what ur doing its okay? how du go ahead with it?
the next thing that comes to mind is will she feel like her? would having sex with another remind me of my ex or as popular belief goes serve to take my mind off her?