Newbie: Is this MLC and how do I GAL?

[Some Day]

Another update...yesterday H contacted me to invite me to an event at his workplace this weekend. I was stunned that he would invite me, especially since many of his colleagues are aware of his affair with his co-worker. I don't think she will be there, but I'm sure word will get around that he came with me.

To top that off, I went to the gym yesterday as he was about to leave. When he saw me, he stayed and was helping me with the machines and showing me some exercises. An hour later he left, giving me a tight hug and a peck on the lips.

I'm so confused and to be honest scared and cautious! I like the attention he is giving me, but part of me is telling me not to get my hopes up because this is probably a passing fad and I don't want to get hurt again. I'm trying my best not to appear overly enthusiastic or to match his level of interest. Any thoughts on this?