Catching up with my 19[f] old teacher [39f]

A few weeks ago I ran into my old high school science teacher (who was also my old soccer coach and a friend’s dad (not a super close friend, but still!)) and we got to talking. We exchanged numbers so that we could get a group together and catch up. Well, so far there has not been any mention of meeting up, but we have been exchanging increasingly suggestive and naughty messages and photos.

He wants to see me the next time I’m in town. I’m up for some sexy fun, but not really interested in it turning out to be more (which I think he wants). Any suggestions for how to tell him that and avoid drama, but also still get some fun would be greatly appreciated.