Seriously?

So I saw the Old Man on Tuesday. The 40-year old guy I was sleeping with earlier this year who ditched me then defriended me...I saw him Tuesday at a yelp event. I looked pretty good - my hair wasn' great by the time he said hi, but it looked good when we waved at each other from across the room early in the evening.

So he sends me a PM saying "it was great to see you at Butterfly". After giving it 24 hours...cause I'm to busy to reply immediately, I was going to reply. Except I'm blocked from sending him messages. Why is he so weird? More importantly why do I care?