Hail Pleasar

Calls-a-Spade-a-Spade,

There are, in fact, plenty of palat­able alter­na­tives. These are, how­ever, not quite as easy to digest. If “Late Night Gen­tle­man Caller” is an unpleas­ant term in his mind’s ear, you may then use the fol­low­ing and grad­u­ally use them in order of vulgarity:

1. Back­door Man
2. Booty Call
3. Fuck Buddy

Quite frankly, “Late Night Gen­tle­man Caller” is an excep­tional term. At the very least, it implies a cer­tain level of respect you have for this per­son. You could very eas­ily refer to him as “dude I’m totally bang­ing on the reg­u­lar”, but you choose to be polite and civil. That’s commendable.

But, at the end of the day, if you aren’t attend­ing social engage­ments as a couple—dating, as it were—it doesn’t mat­ter how you refer to him. Like Juliet said, “What’s in a name? That which we call a rose by any other name would smell as sweet.” [Romeo and Juliet (II, ii, 45–46)]

Tell him to get over it; you could very eas­ily call him much worse things.

Just my $0.02
Julius Pleasar