big mouth syndrome

At the christmas party saturday, I was heavily flirting with a guy I work with.  Yeah, I'm no newbie at the co-worker thing.  I'm like a water through a sieve with co-workers.  Honestly, I really need to stop sleeping with people I work with.  Anyways, we both knew what the other was wanting by the end of the night.  But, no, I didn't go home with him then.  I had to work early in the morning, and I knew it would go all night.  Monday morning, however, I was awake very early - try 4:30a - and I texted him to see if he wanted to hang out after he got off work.  He did, and promptly came around.  At this point, I really wasn't sure if I actually wanted to have sex with him.  So, I ... dipped my toes in the water.  Snuggling up close and brushing my feet and other parts on him.  Finally, I bit the proverbial bullet and just kissed him. Moving the story along, our clothes come off and I mention to him that I don't have a condom.  He tells me,

"I have one."  

To which I reply,

"Do you always carry one with you?"  

"Well, you never know,"

 he tells me smiling this big shit eating grin,

"By always, I mean since Saturday."

Laughing, I reply,

"Oh you were that sure of yourself?"

"Like I said, you never know."

So we screw around.  I cum; I mean, wow this boy can fuck.  I like it nasty just any other normal girl, but for simple "I'm just getting to know you and I don't want you to know how I like it just yet so that I don't scare you away" sex, it was good.  But he doesn't.  He stops me, says that his penis is getting to sensitive, that it is starting to hurt.  I thought it had something to do with me, because I'm going down on him.  So we stop, go outside for a smoke.  We come back in and start kissing again.  At this point, I'm all tapped out for a bit.  So I start to pull his pants off.  AND as I'm doing that my big mouth-that-I-can't-keep-closed-for-the-life-of-me opens and out comes

"wow, you're so tiny." 

 Yeah, my face turns bright red and I get all flustered.

"I'm so sorry, that's not what I meant at all!  I was talking about your waist."  

"You might not want to say 'you're tiny" as you're taking a guy's pants off.  Just for future reference."

"Yeah, I know."

But, I made up for it.  And he hasn't been deterred from talking to me at least. Who knows if I'll get to show him how I actually like it.