Please help!!

A straight friend of mine recently started playing footsy footsy with me while we were all crashing at his house, when I responded in kind he told me to stop it!! Feeling terribly embarrassed and totally perplexed I immediately did as he asked and turned the other way, only to have him put his leg over me again and repeat the cycle!!!

I am feeling totally used and betrayed!

How would you suggest I respond to this???

Thank you Kindly.