I just baffle Kevin sometimes

Kevin is intrigued that I'm an introvert in social situations, but not at work. After all, I am a teacher.  He has noticed this "phenomenon" over the course of our relationship, but it was driven home during one of our extended stays this summer.  He joined 24 hour fitness and since I have a membership for all clubs I worked out with him while we were in Austin.  After several of the workouts, I got in the hot tub while he sat in the sauna.  It was during this time that he really noticed how much of an introvert I really am.  Apparently, the trouble I run in to is that I'm a good, southern girl.  I'll make eye contact and acknowledge that someone new has entered the scenario, but that doesn't mean I want to talk to them.

Situation #1: I'm in the spa on one side.  A guy comes and sits directly across from me and starts a conversation with me.  Guy: So, did you just get finished working out. Me: (so many things I could say) Yes.  Guy: Yeah, I got finished lifting weights.  What did you do? Me: Yoga.  Guy: I did yoga once. Me: _________, Guy: Did you like the instructor? Me: Yes.(Get a clue man!)  At this point Kevin comes over, I acknowledge him with a "Hey Babe!" and the Guy gets out of the spa. 

Situation #2: I get in the spa and there are two other guys.  We acknowledge each other but stay on our respective sides and ignore the other.  Just fine with me!  BUT WAIT...the water aerobics class gets out and here come two other guys.  Where do the sit in the spacious hot-tub?  Yeah that's right! On either side of me.  Then, they proceed to have a conversation with each other across me.  So I made the mistake of looking at one of the guys and asking politely, "Would you like to switch places so you can carry on this conversation?"  Guy on my left: "No, that's okay."  They continue to have a conversation about audits (intriguing stuff if you're an accountant or something), then Guy on the Right looks at me and says, "Did you just get done working out?" Me: (REALLY!!!?????) Yes.  GOR: Yeah? We just got done with the Water Aerobics class." Me: Hmm.  That's nice.  GOL (guy on the left): Yeah, I saw you swimming laps.  Me: Yes.  GOR: Was it a good workout?  Me: Yes. GOR: Yeah.  The aerobics class was good.  Me: (Nothing).  GOR: Do you swim a lot?  Me: Yes.  GOR: Have you been to other 24 hour clubs? Me: Yes.  Really? Are they any good?  Me: Yes.  (one of the originally guys in the hot tub is trying really hard not to laugh).  Of course at this point, here comes Kevin and he gets into the hot tub, and sits right next to me successfully pushing the GOR out of the way.  

Good Lord!  There were SO MANY smart alecky remarks I could have made that would have been rude, but I couldn't do that.  It's just not me (in social situations).  What shocked me was that in both of the situations neither guy got that I was answering their questions but not extending the conversation. I was really uncomfortable in the situation because I didn't know either guy, and had no intention of getting to know them.  I'm not a very social person when I work out.  It's just the way I am. This just baffles Kevin sometimes.