redbull saidI really have to know someone & be comfortable with them before I swallow.
Same here. And frankly, he's gotta have a taste I can tolerate. A few guys I've encountered didn't, though I know the trick of having them cum when they're deep into your throat, where you really can't taste anything. It's when they cum on your tongue that the taste is strongest.
On the other hand, if the guy shoots really massive loads down my throat quickly it can choke me, and I have to pull away and finish him by hand, so a first-timer is always an adventure for me. If we do any repeats then I know how to manage him in the future.
"Blow jobs are like a box of cream-filled chocolates: you never know what you're gonna get." (With apologies to Forrest Gump)