Relax.... You are not any risk of HIV. Six and seven month time was more than enough to produce conclusive results using test kits of earlier generation. Therefore those two test results relieve you from HIV risk fully and conclusively
HIV doesn't transmit through casual contacts, hugging, hand shake, kissing etc. Further, sweat is not the body secretion listed in the infectious body fluids. Also, exchange of any infectious body fluids if takes place INSIDE the body then it can only cause the transmission of the virus.
Relax, calm down and move on with your life normally, you were never at any risk of HIV.