Why would some of the male employees/trainers at gym avoid me after I followed their instagram?

I noticed some of my coaches other clients follow the other trainers on Instagram so I did the same I thought NOTHING of it. I actually went to high school with one of them so I followed his personal page as I could tell he was now and again looking maybe wondering where he knew me from! He accepted my request but didn’t follow back but I followed the female coaches too and I noticed the guys seemed to avoid me around the gym / act like they want to steer clear from me Why? It’s just a follow?

Why would some of the male employees/trainers at gym avoid me after I followed their instagram?
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