<human>: Give me the gist of the text in a nutshell

I have been in a serious relationship for a number of years with [Ryan] and we are now engaged. He is the love of my life and I would never do anything to jeopardize that. 

I recently met [Jack] through work and we became good friends outside of work. We hang out occasionally and make each other laugh. He hasn't made a move on me but it is apparent that he is interested even though he knows I am engaged. 

I feel like if we met in another situation where I wasn't already in a relationship, I would probably give it a chance. But that is not the case, so I would like to stay friends. 
I would like to clarify that with him but without being an asshole. Seriously, how do I keep this shit from getting awkward?
<bot>: Currently happily engaged. Met a guy that I hit it off with, but would like to continue to be friends with him without making things weird. What should I say?