I used to date taller guys but then I married a man my same height. Super convenient for kissing without torticollis. This comes from an average-to-short woman, so I can't really appreciate how it feels dating shorter men, but I guess I can relate to a guy whose waist was narrower than me 
To clarify the situation with Mr Chef, it will be date #6, and we agreed to be exclusive on date #5. I admit that I am totally ignorant of OLD and even dating in general, and I have only ever gone beyond first date from OLD with MrChef, but I have heard of multidating and it is not something I planned to do. Whether I want a LTR with MrChef or not is not clear as I am a very slow burner. I do like him, but I barely have enough data to reach conclusions about the viability and compatibility long term. For instance, he just told me today that snoring is a deal breaker for him. That could have very well been the end of the story if I snored (info he didn't know).
I have not been in OLD since exclusivity chat, but I met MrSmile organically while doing a very old hobby of mine with my kids. MrSmile proposed we meet again to practice said activity, not as a date, and I don't even know if he is single, or anything else about him except his name, phone number and that we share this hobby. I used to compete in this thing and his level is close to mine, so it was a nice surprise to find a worthy opponent. And he is attractive and roughly my age.
So is exclusivity the same as been in a relationship or the intention of focusing on one person but still to decide? And am I been deceitful if I meet someone else I find attractive for an activity, not a date? (If a date came up I am aware it would against the exclusivity).