Should I initiate a conversation with him?

I like this guy in my gym.. He doesn't talk to anyone, just does his workout and leaves.. We've had eye contact multiple times, and one day I finally have in and smiled at him, he smiled back.. I looked at him and smiled another day as well.. But we've not talked to each other.. Should I go upto him? Will it be a turn off? What should I talk about?

Should I initiate a conversation with him?
Post Opinion