I've been seeing this guy for a while who shaves. I've been noticing he's had a different behavior toward me, and I've been worried that he sleeps with other ppl. However, he's more comfortable here and there (around me) without grooming and I feel like if he were screwing other people that he would be clean shaven like he always was with me in the beginning. Am I right? Is this a sign he's faithful? Or should I still be worried?