I'm a mostly regular gym goer and over the past month or two I've been chatted to by an older, obviously gay man. While initally I had no problem with this, besides being distracted when I was trying to concentrate and keep my breath, it's developed into more of a problem in recent weeks.
One Friday morning when there was no one else about he asked me would I go to lunch with him after the workout, to which I gracefully declined. This didn't bother me to much but I would have prefered not to see him in there again, just thought it might be a bit awkward. So I started going to the gym earlier to avoid him.
However, on Wednesday he arrived when I was nearing the end of my workout. I nodded hello but that was it. I went to the locker room to get changed and he appeared shortly thereafter despite having only been in the gym for 20 to 30 mins max. It felt like he was following me to be honest. Then, get this, he took off his clothes and strikes up a conversation which made me feel very awkward having to shower and change in front of him. Just when I was ready to leave he then asked me did I want to go for a 'drive' with him in his car. I just said thanks but no thanks. I'm still kicking myself for not just telling him to fuck off!
Anyway, it ended with him saying he might see me this Friday if I'm in.
It's really made me nervous and awkward about going back there.
What, if anything, is to be done? Any advice?