A harmless spark?

I am having a particularly stressful day. Not just am I tired of being deprived of my favourite foods, I am also in a mental mess with respect to my relationship status. In case I haven’t mentioned this before I am in a “sort-of” relationship with Aryan. Let’s just say it’s complicated. We just started living together in the same city after 2 years and he is currently dating Kanika – his batchmate.  He and I have always discussed our relationships at length and been open about pretty much everything. Of course I am not happy about him being with Kanika but he says it’s a fling that doesn’t mean anything. On the other hand, he and I share a friendship that we would give up our lives for. But something strange happened today. We took a walk in the park in the evening and just as we hugged to say goodbye, he held me longer than a friend should. My heartbeat went up to a million a second and he just took my face in his hands, looked into my eyes and then just gave me a peck on the forehead and said “bye sweetheart”. Now, when a man does that, what’s the woman supposed to think? It wasn’t the platonic, friendly peck; the look in his eyes wasn’t platonic. So what exactly was that? Just a spark from the past? Should I be ignoring it or thinking and analyzing about it – like I am doing right now?