As a long-time practitioner of 3somes I can say that MFAS' comments show his usual ignorance and general homophobia. It's impossible to generalise whether any one person will prefer any sexual position over another just by looking at them or even listening to what they say. I had regular 3somes with the same two bar boys over several years. The only "rule" I find is not to take two guys from the same bar - and even then you will find in larger bars that there are boys who will go with each other. Not having sex with a "friend" seems a universal preference the world over. I can't answer for Pattaya, which is merely a large country town, but in Bangkok on the Apps such as Grindr if I'm chatting to a guy or - more likely - he has sent me a message first, I say up front (as I did yesterday) "looking for bottom for 3some" (my regular "top/vers" was feeling frisky) and see where the conversation goes

As for having anyone sleep over - no thanks, Old Git