advice!!!!!

So, I met this guy yesterday trough and friend and prior to meeting, we've been talking and getting flirty over txt, I finally met him with a small group of people and I had an amazing time! He kept putting his hands on my back and consistently touching me on my waist, and when ever our elbows would touch on my table or our legs, he wouldn't move his arms or legs, thoughts on this ? 

sign that he may be interested ?!