LDR Ended Just Came Back Home & Ex INITIATES Convo for the first time

[TooMuchPride]

hmm ive spoken about my story many times...i was in a long distane relationship for 7 months we broke up 3 months ago i hadnt seen him in 5 months..i still have feelings for him but he ignored and treated me kinda badly since we broke up , he never initiated a convo...i saw him for the first time on saturday but from a distance...suprisingly he messeged me last night about something random..i have so much resentment towards him but i replied "kk" i kno he is dating someone but at this point what do i do? if anything..ignore or befriend?...I Wouldnt mind rekindling he flame if i get MY WAY..i kinda expected him to turn into a puppy when i arrived...seems like thats what could happen..but i kno he is only paying attention because im here